Allison code p0842

This is the complete list of Allison fault codes. They are the 2 center solenoids between the A&B trim and F trim. Open or shorted harness for the Transmission Fluid Pressure Sensor/Switch ‘A’ 3. Brake Sensor Circuit Malfunction. 7kb: Download: Allison Transmission 1000,2000 series fault code list. • Description of diagnostic codes, system responses to faults, and troubleshooting. DTC READING AND DTC CLEARING DTCs can be read and cleared by using Allison DOC™ For PC–Service Tool. Jul 23, 2009 · 3. When your transmission changes gears up or down, it is actually pressurized transmission fluid that makes things happen. Got a 2002 LB7 with the Allison 1000. ” Your vehicle’s powertrain control module (PCM) will trigger this code when the “A” input sent by the transmission fluid pressure sensor (TFPS) isn’t within the range stored in the PCM or transmission control module (TCM). After a 1700 mile trip, pulled into the driveway and saw a check engine banner on the dash. See Troubleshooting Process information. This can be caused by debris or contamination in the fluid, bore, or in the shift solenoid. Limp in 2nd. 7d3c The cost to diagnose the P0842 Chevrolet code is 1. The high side drivers are connected to the high side circuits of the solenoids and commanded on during normal operation. 0 hour. 00 Add to cart DIAGNOSTIC TROUBLE CODES (DTC) 1000 AND 2000 PRODUCT FAMILIES TROUBLESHOOTING MANUAL—ALLISON 4th GENERATIONCONTROLS 5–3. But it could also be caused by a failed sensor or wiring issue. No codes. [PDF] 145. Freightliner stated it was a pressure switch inside the transmission. [PDF] 1. 0 PC Service Tools – User Guide [PDF] 6. When a P0840 and P0842 are set in combination, this may indicate a short to ground at the pressure switch circuit or the shift valve is stuck in the stroked state. This can help identify any issues with the Transmission Fluid Pressure Sensor/Switch ‘A’ circuit, which could be causing the fault. Minimal loaded towing or hauling. Transmission Mechanic: OK, first, resetting does nothing. P1760-- TCM Supply Voltage. com merch. P1891-- Throttle Pos Sensor Clutch PWM Sig Low Input. Codes 0842, 0846, 0872. On the garbage trucks cannot enable ND. ACTION TAKEN WHEN THE DTC SETS: When DTC P0843 is active: 1. cleared codes, reverse fine, no forward, blinks on forward indicators. Ocassionally get "Range Shift Inhibited" with no Drive or Reverse. Some common diagnostic trouble codes (DTCs) related to this failure include U0101, U0100 and P0700. 3kb. CIRCUIT DESCRIPTION: The Pressure Switch Manifold (PSM) is a multiple-switch assembly made up of three normally open (N/O) and one normally closed (N/C) pressure switches. com p0842 code transmission fluid pressure sensor switch a Nov 11 2023 a p0842 code is commonly defined as a transmission fluid pressure sensor switch a circuit low the code is logged once the tfps input doesn t match the expected value stored Oct 9, 2012 · Pulled from drive way, trans temp 65*. Lousy TCM or PCM (in rare cases). The C solenoid is above the larger A&B trim solenoids. Chapters on the traditional autoimmune liver diseases -- primary biliary cirrhosis, autoimmune hepatitis, primary sclerosing cholangitis as well as We come up with the money for you this proper as with ease as simple habit to get those all. The P0873 diagnostic trouble code is one of the more serious DTC’s, because it could be caused by either a mechanical problem with the valve body or transmission pump. The 4th is more involved to get to, and we'll start by removing the engine cover which should pop right off rather easily. Categories 3000 & 4000 Gen 4, Allison, DTC TRUCKS Tags 3000, 4000, Allison, Code, Fault, Gen4, P0842 Download Allison Doc Premium Update 2023 v2 $ 105. The Transmission Fluid Pressure Switch allows the engine's control module (PCM) or Transmission Control Module (TCM) to use hydraulic fluid to engage the clutches in the transmission to allow for smoother shifting while driving. Mine was stuck in second gear. Mechanic's Assistant: I understand that you are experiencing an issue with your transmission not shifting out of reverse and there is an active code P0842; our Mechanic will be able to assist you with this problem. Aug 5, 2014 · Your codes indicate a problem with the low side circuit of shift solenoid 1. That is on the valve body. [PDF] 16. Please be gentle if any info left out. When running, your alternator should produce in the vicinity of 14. Weak shifting ability. Attempting to fix the P0872 code can become a challenging task if you don’t have the right tools and know-how to test the transmission fluid pressure sensor. 00 Rated 0 out of 5 Feb 2, 2024 · 2 troubleshoot-allison-transmission-code-p0842 Internal Combustion Engines Institution of Mechanical Engineers. Description. Download. So it’s usually best to leave the job to professionals. Therefore, the total cost of fixing the P2669 fault code will depend on the hourly rate charged by the Uses standard configuration. ALLISON AT Code (DTC) P0842 Transmission Fluid Pressure Sensor/Switch A Circuit Low; ALLISON AT Code (DTC) P0843 Transmission Fluid Pressure Sensor/Switch A Circuit High; Sep 25, 2020 · OkDually. The last time this happen it was cold as well, 58* This all started after a transgo Mar 16, 2006 · Allison codes Po840, 842, 872. Overheated transmission. The use of Allison DOC™ For PC–Service Tool is described in the instruction manual furnished with each tool. ” It honestly feels like it drives fine but I haven't really pushed the car so I can't really say if there's if a difference in driving. Drop the pan and switch the E and D solenoids. This work engages the expertise of a multidisciplinary research team to collate and review the latest knowledge and Description of the 3000 and 4000 Product Families Allison 4 TH Generation Electronic Control system. Other shift solenoid, transmission slippage, lock up, gear ratio, or torque converter clutch codes are often stored in the PCM with the P0842 code. Code: P0658 TCM Actuator Supply Voltage 1 Low. Diagnostic codes P0841, P0842, P0843, and P0844 refer specifically to problems with a vehicle’s transmission fluid pressure P0877: Transmission Fluid Pressure Sensor/Switch “D” Circuit Low OBD-II Trouble Code. P0973- indicates a short to ground on the low side circuit to SS1 (wire# 152) P0842- is indicating that shift valve 1 is not moving. With the engine running, test the alternator output with your DVOM. 5Mb: Download: Allison Transmission DOC 7. Suggestions would be to drain the pan, change the "C" shift solenoid 29536833, refill the trans with fresh fliud, and change the spin-on filter with genuine Allison #29539579 (be sure OBD-II Code P0842 means that the Transmission Fluid Pressure Sensor/Switch 'A' Circuit is reading a low voltage signal. By OJ Avery November 28, 2018 in Engine and Transmission. Dec 17, 2016 · Code: P0563 ECM, PCM System Voltage High. This code is a result of the problem with the SS1 electrical circuit. OBD-II Code P0842 is defined as a Transmission Fluid Pressure Sensor/Switch "A" Circuit Low. Clogged transmission fluid galleries. If no problems are found, further mechanical diagnosis Jan 23, 2022 · 2015. Make sure there are no broken, bent, pushed out, or corroded pins on the connectors. Checked the code using the touch pad, it showed everything was in good health but showed an active P0847 code. So, how do I fix code P0841? How do you fix P0841? There’s a lot to consider when troubleshooting and repairing P0841 fault codes. These include harsh shifts, delayed shifts and transmission overheating. Dec 19, 2023 · P0842 Diagnostic Code Allison p0842-diagnostic-code-allison 3 Downloaded from pivotid. See full list on spoke-n-word-cycles. All wire connections look good. i ran the truck hard then drove about 3 miles and let it idle for 10 min and shut it off, is started it up and drove it out the lane and Dec 16, 2007 · P1727-- Shift Solenoid "E" Controlled Clutch Not Engaged. Symptoms. Aug 3, 2022 · To diagnose the P0842 code, it typically requires 1. A P0872 trouble code refers to a problem detected by the Powertrain Control Module (PCM) with the fluid pressure within the transmission. You have remained in right site to begin getting this info. It makes soils relevant to current political realities and national issues. Related trouble codes include a P0870, P0871, P0873, and P0874 code. The Transmission Control Module (TCM) requires direct battery voltage input to operate. Apr 11, 2011 · 6. Surging, goosing, or cutting out at highway speeds (40 -70 mph). The purpose of the Troubleshoot Allison Transmission Code P0842 Recognizing the pretentiousness ways to acquire this books Troubleshoot Allison Transmission Code P0842 is additionally useful. 9Mb: Download: Allison Transmission 1000 and 2000 Series Fault Codes List. uvu. Jun 13, 2010 · Hi I'm new here. Truck has 111000 miles on it. If it is too low or dirty, hydraulic pressure will be affected. Allison found that the pressure sensor Jun 20, 2016 · Low Voltage. See Intermittent Fault information. The P0842 code indicates that there has been an abnormally high voltage reading from the transmission fluid pressure sensor circuit. P0842-- Transmission Pressure Switch, Solenoid C Stuck Closed P0843-- Transmission Pressure Switch, Solenoid C Circuit High If the code returns and is accompanied by a delayed engagement issue, the transmission pump is likely failing. Oct 7, 2023 · The T14 code is linked to the Allison A50 TCM failure, which can result from a variety of factors. 0 hour of labor. Check the pump pressure with a manual pressure gauge. 7Mb: Download Sep 16, 2023 · The diagnostic trouble code (DTC) P0841 indicates “Transmission Fluid Pressure Sensor / Switch ‘A’ Circuit Range Performance. The cost of repair is influenced by the repair time, which is commonly charged between $75 and $150 per hour by most auto repair shops. Your Allison Transmission authorized service outlet should be consulted whenever there is a transmission-related concern. And other general causes include; Mechanical internal transmission failures. Most auto repair shops charge between $75 and $150 per hour. There are many powertrain/engine codes that share the same symptoms as the P0872 code. This code can be triggered by a variety of issues, including mechanical problems and electrical faults. Also, a few times this past month or so the truck has had a weird engine burp right after startup. I cleared it with banks and started the truck up and the light stayed off. Mar 25, 2020 · Transmission Mechanic: 842 is for the fluid pressure sensor. [PDF] 13Mb. 5. com; 24/7 Customer Support; Facebook-f Twitter Github Bitbucket Twitter Github Bitbucket National Highway Traffic Safety Administration May 26, 2016 · Step 1 – Remove intake tube. The first thing a mechanic should do when trying to diagnose a P0848 OBDII trouble code, is to check the level and condition of the transmission fluid. ON. Jumps to neutral, engine light on. What the P0842 code means The code P0842 comes with a couple of signs that give a clue about the existence of the challenge. By increasing or decreasing the current to the solenoid, the line pressure can be adjusted accordingly. DNS, the AUTOMATIC Nov 6, 2023 · Code P0842 is active Transmission Allison. bumpI;m getting the same code. whatsapp +51955515985; support@ecuforcetruck. More Information on P0841, P0842, P0843, and P0844 Diagnostic Codes. Slipping transmission or harsh shifting. Connect a Digital Voltmeter (DVOM) black lead to the ground or low reference terminal at the TFPS sensor wiring harness connector. Faulty transmission pump. The 13 tells you the main code and the 12 will tell you the sub code. Dec 24, 2015 · 2004 chevy duramax with Alison transmission has to code p0842/ p0872 have already 2008 Chevy Siverado 3500 w/Duramax & Allison 350k mi. The D pressure switch monitors D shift valve positioning and relays it to the TCM. P0700 tells the engine transmission is malfunctioning. Jan 24, 2017 · I have a 2002 dually with a lb7 and Allison, the trans was built 2 moths ago by mike l, and 2 weeks ago I just randomly started throwing code p0872, I washed my under carriage and after that the code started appearing, sometimes the code will come on and then clear itself, sometimes it doesn't come on at all, I changed the nsbu, and I took a blow dryer and dried all the wiring and connectors 2 Troubleshoot Allison Transmission Code P0842 2022-08-11 own soil map, at a more detailed map scale, to suit the project requirements. It is setting code P0872 (E shift valve) in the TCM. See if it changes codes. Allison 3000 & 4000 Gen 4 Fault Code: P0882 TCM Power Input Signal Low. The automobile fault code P2669 can be diagnosed and fixed within an estimated repair time of 1. Allison 1000 & 2000 Gen 4 Fault Codes: P0842 Transmission Pressure Switch Solenoid C Circuit Stuck Closed. P0752 code randomly came on and will not stay cleared. com Diagnosing a P0842 OBDII trouble code should begin with a check of the transmission fluid. acquire the Troubleshoot Allison Transmission Code P0842 belong to that we find the money for here and check out Read Free Troubleshoot Allison Transmission Code P0842 Unveiling the Magic of Words: A Review of "Troubleshoot Allison Transmission Code P0842" In some sort of defined by information and interconnectivity, the enchanting power of words has acquired unparalleled significance. Some vehicle PCMs place the transmission into Limp-in mode in addition to storing a code and illuminating the Check Engine light. the computer notices this because there is excess pressure but the soleniod might not be stuck open. The wiring and connectors on the transmission wiring harness will also tested, along with the transmission fluid pressure sensor itself. Code: P0881 TCM Transmission Control Module (TCM) Power Input Signal Performance. Allison Transmission 1000 and 2000 Product Families Troubleshooting Manual. Any help would be appreciated. Poor electrical connection for the Transmission Fluid Pressure Sensor/Switch ‘A’ 4. . This popular international Dec 12, 2023 · Free reading Troubleshoot allison transmission code p0842 (PDF) ; merch. Always avoid following generic repair guides. • Wire, terminal, and connector repair information. Code: P2670 TCM Solenoid High Control Circuit Group 2 Low Voltage. * For some problems, diagnostic codes may be registered without the ECU activating the CHECk TRANS light. Jump to Latest Follow P0842- Trans pressure switch C circuit stuck closed P0872- Trans pressure switch E circuit stuck closed Jan 21, 2024 · 2 P0842 Diagnostic Code Allison 2023-11-06 immunologically-mediated infectious liver disorders including those related to bacteria, parasites, and all of the classic viruses. Truck in limp mode, reverse & 3rd gear only. Check the Transmission Fluid Pressure SensorSwitch ‘B’ for any issues. This usually causes the tranny to quit down shifting and stay in 5th gear. Allison Transmission 3000,4000 series fault code list. Allison Transmission – Shift Selector – Operator and Diagnostic Trouble Code manual. P0972- indicates an open condition on the SS1 circuit. That is the middle valve in the upper half of the valve body. [PDF] 12. If the source of the problem has not been located P0842 code definition. Connect the red lead of the Digital May 8, 2015 · It is popping up codes P0842 ( trans fluid pressure sensor) and p07000 ( trans control Mil request) 4x4 stock Duramax ,stock Allison Air bags, in frame 5th wheel The Allison Transmission code P0843 is a diagnostic trouble code (DTC) that indicates a problem with the transmission control module. If the code is active, then the work of the retarder is prohibited. NOTE: The TCM battery power signal must be provided through a 10A or 15A fuse, or a manually-reset circuit How Serious is the Code? A P0872 diagnostic trouble code is actually pretty serious, as it could be caused by either a failed sensor or hydraulic pressure issues. In either case, you can experience a number of drivability issues that can result in serious internal transmission damage. If you object to download and install the Troubleshoot Allison Transmission Code P0842, it is agreed easy then, past currently we extend the connect to purchase and make bargains to download and install Troubleshoot Allison Transmission Code P0842 hence simple! Community-oriented Primary Care Emergencies in Primary Care Colorectal Cancer Screening Allison 1000 & 2000 Gen 4 Fault Codes: P0845 Transmission Pressure Switch Solenoid D Circuit. Ok is it something that I can replace we reset the codes and the 842 came back immediately. Goes into 3rd gear limp, although locking in 5th gear is more common. Allison Transmission 3000/4000 series fault code list Allison Transmission PDF Service Manuals P0842 Pressure sensor low voltage PS1. P0842: Transmission Pressure Switch Solenoid P0847 code is logged when the powertrain control module (PCM) detects an issue with the hydraulic clutch or the pressure switch. Allison 1000 & 2000 Gen 5 Fault Code:P0842 Transmission Pressure Switch 1 (PS1) Circuit – Low CIRCUIT DESCRIPTION: The Pressure Switch Manifold (PSM) is a multiple-switch assembly made up of three Normally Open (N/O) and one Normally Closed (N/C) pressure switches. On advise from others, the Valve body ( came with internal harness and PSM) was replaced with a GM Dec 26, 2012 · P0752 is for SV1 or "C" Shift valve sticking ON (spring compressed). Connect the red lead of the Digital To fix the P0842 fault code, start by visually inspecting the wiring harness and connectors. Had four codes,P0571,P0677 Jan 2, 2024 · A scan is throwing the code P0842 and google gives me - A P0842 code is commonly defined as a “Transmission Fluid Pressure Sensor / Switch 'A' Circuit Low. Faulty Transmission Fluid Pressure Sensor/Switch ‘A’ 2. Nov 13, 2018 · FYI on Allison trouble Code P0847. With the Key Off, disconnect the electrical connector at the TFPS sensor. Failing pressure regulator. The pressure switch manifold is the tin looking part next the the long feed line . This solenoid is responsible for regulating and directing the oil pressure that controls the transmission line pressure. What are the Common Causes of the P0877 Code? Faulty pressure sensor or switch; Circuit issues, such as a damaged wire or poor connection; Low fluid level The fault code P0840 can be caused by the following: 1. P1892-- Throttle Pos Sensor Clutch PWM Sig High Input. Covers fault codes for Allison 1000 and 2000 series transmissions. As you may know, people have look numerous times for their favorite novels like this Troubleshoot Allison Transmission Code P0842, but end up in infectious downloads. Allison 1000 & 2000 Gen 4 Fault Codes: P1891 Engine Throttle Position Sensor Pulse Width Modulation (PWM) Signal Low Input 1000 & 2000 Gen 4 $ 50. 01 Duramax 2500HD LS CC/SB Bone Stock. On the freeway last week and the truck began to "surge/flare". Issues with the Transmission Valve Body. Dec 15, 2007 · Allison Info, Specs, and Code list. Look for any damage or corrosion. edu on 2022-05-14 by guest of evolution, ecology, and cancer, but also goes beyond by connecting the interfaces of these disciplines. 00. P1835-- Kickdown Circut. They have the equipment to check for diagnostic codes and to correct problems which arise. OFF. along with them is this Troubleshoot Allison Transmission Code P0842 that can be your partner. If the P0842 code does return, we will need to test the TFPS sensor and its associated circuits. a diagnostic code. Dec 14, 2022 · CONDITIONS FOR SETTING THE DTC: DTC P0843 sets when PS1 indicates PRESSURIZED (open) when the TCM expects PS1 switch state to be EXHAUSTED (closed). juneshine. High side drivers are turned on during TCM Feb 22, 2009 · Nothing changed with the truck, it just threw this code. I checked it with my banks PDI and if memory serves the code was P0842 (not sure if the letter is right). Defective fuel efficiency. Aug 30, 2012 · Aug 30, 2012. Code P0882 can set due to low battery voltage caused by either improper charging system operation or excessive draw during starting. 4. This test monitors for low battery voltage to the TCM on terminal 10 and 70. To fix the P0847 fault code, start by visually inspecting the wiring harness and connectors. May 9, 2023 · To read the single digit code, and the readout may be vertical in your vehicle, you will see D1 13 12. Share More sharing options Followers 0. 6 GMC 2500 code P0847. Symptoms of a P0872 include: Transmission overheated Nov 28, 2018 · Allison code P0843 Facebook; Twitter; Allison code P0843. Consult the appropriate repair manual or repair database for the exact code definition. P0708. Have you noticed any other issues or issues with the transmission, such as slipping or Dec 2, 2017 · P0842 transmission code Jump to Latest Follow 42K views 8 replies 6 participants last post by bnbhoha Mar 22, 2022 Allison 3000-4000 Series Troubleshooting Manual. Rather than enjoying a good book with a cup of Sep 17, 2010 · these 2 codes come up. Ask Your Own Transmissions Question. 0 volts. U1016-- Class 2 Powertrain Controller State of Health. 2 Troubleshoot Allison Transmission Code P0842 2022-06-12 The contents of this volume are based upon the proceedings of a Sympo sium entitled "Infectious Diseases of the Central Nervous System" held in Phoenix, Arizona, and sponsored by the Barrow Neurological Institute and Foundation during its Ninth Annual Symposium. P0703. It is turned down for towing, has trans tuning onboard as well. Had an Edge with attitude since about 30,000 and switched to CTS/EFIlive (Idaho Rob tunes) at about 90,000; daily driven on +90hp. P0872 is a stuck E shift valve. High level signal from the current transmission sensor. This hydraulic pressure is constantly monitored by the transmission fluid pressure sensor, which then relays the information to the ECU Troubleshoot Allison Transmission Code P0842 Thank you very much for reading Troubleshoot Allison Transmission Code P0842. We have the funds for Troubleshoot Allison Transmission Code P0842 and numerous book collections from fictions to scientific research in any way. Broke coolant line, replaced it, filled fluid 10 quarts. In order to properly diagnose and repair the issue, it is important to understand what the code means and A P0847 diagnostic trouble code is actually quite serious, because if there is a problem with either the transmission fluid pressure sensor, or the amount of hydraulic pressure available, a number of drivability issues can occur. Let me check on the other 2. Note: The definition of code P0877 might be different depending on the vehicle manufacturer. TCM-P0751, P0756, P0848, P0877. P0757 soleniod b is stuck on. Wrap Up. In most cases, problems with the T14 code can be traced back to the TCM itself, necessitating repair or replacement. Rated 0 out of 5. P1860-- TCC (PWM) Solenoid Circut-Electrical. • Description of the electronic control system components. I am guessing this is probably the problem! Chevy 04. Frayed wires or damaged connectors along the transmission wiring harness also need to be addressed, along with any transmission fluid leaks. ALLISON 2000 Code (DTC) P0842 Transmission Fluid Pressure Sensor/Switch A Circuit Low; ALLISON 2000 Code (DTC) P0843 Transmission Fluid Pressure Sensor/Switch A Circuit High; ALLISON 2000 Code (DTC) P0844 Transmission Fluid Pressure Sensor/Switch A Circuit Intermittent; ALLISON 2000 Code (DTC) P0845 Transmission Fluid Pressure Sensor/Switch B This code is set when the condition occurs more than 3 times during the current drive cycle. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. Let it sit overnight and now its shifting normally again but still throwing code. Truck normally driven in 450 ish whp. 5 Chevy 2500hd Duramax/Allison 4x4, 70ish k miles on rebuilt trans and new converter, setup for max 600whp. #1. have to shift to park then back to drive to get it going, feels like it jumps into gear hard when I do this. The 4th gear pressure switch is accessed from above, while the third gear is accessed from below. Code: P0883 TCM Transmission Control Module (TCM) Power Input Signal High. Hi , newbie here. DTC may set while commanding Neutral, 1st, a 5-6 upshift, a 2-1 downshift, or 6th range. Some of the symptoms include: Check Engine (CE) light display. I plug EFI in and see these codes. 02 allison, stock, 155000 miles. May 6th, 2018 - Allison 2000 transmission codes along with bmw auto body parts online as well as allison transmission trouble code p0842 in addition transmission range sensor jeep 4 7l wiring diagram together with nissan quest abs wiring along with 5bm4f mitsubishi montero ls 1996 mitsubishi montero 4wd also md3060 Allison 1000 & 2000 Gen 4 Fault Codes: P1891 Engine Throttle Position Sensor Pulse Width Modulation (PWM) Signal Low Input 1000 & 2000 Gen 4 $ 50. In this example the problem is caused by ECU Input Voltage Low. In either case, expect a number of drivability issues. Look for any damaged components and check if there are any broken, bent, pushed out, or corroded pins in the connectors. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. If the P0872 code does return, we will need to test the TFPS sensor and its associated circuits. The P0960 fault code refers to an issue with the line pressure control solenoid valve control circuit in the transmission. Note: The definition of code P0847 may be different depending on the vehicle manufacturer. 2014-10-10 This book presents the papers from the Internal Combustion Engines: Performance, fuel economy and emissions held in London, UK. 5 LLY, 2X, shell, XDR, MikeL Heavy duty up-grade, 6spd, TransGo, deep pan, de-badged, 65 Allison 3000 & 4000 Gen 4 Fault Code: P2669 Actuator Supply Voltage 2 (HSD2) Open. What are the Common Causes of the Sep 2, 2022 · How to Fix the P0872 Code. I have checked the wiring from the TCM to the transmission, all checked out good. Dec 31, 2019 · LBZ: Allison P0842 & P0752 Help? Bought this truck new in 2006, has been next to flawless until a few weeks ago. The first two digits are for the position of the code, first , second, third, and so on. The pressure switch is the "Tin" looking part that is Nov 13, 2010 · P0872 is "Pressure sensor C circuit low- according to my info. In any case, dirty, and low transmission fluid are common causes of P0840 on Nissan Altima. I have a P0847 code Transmission Fluid Pressure Sensor/Switch "B" Circuit Low. It is common for most auto repair shops to charge between $75 and $150 per hour. The high side drivers serve as a master switch to supply battery voltage to the low side drivers. Roy. You may also have a bad internal harness. This book brings together discussions on soils and soil mapping units and up-to-date international techniques and technologies. qp hr ie pp hi gi wq vn ps tm