Error Code P085E: What It Means & What To Do?

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A decrease in the fuel economy and the engine performance along with occasional engine stalling, increased emission from the exhaust and not starting with improper throttle response may be an indication of problem with the transmission system hampering the engine’s performance, thus indicating OBD Code P085E.

This trouble code is generic, which would mean that it can apply to all the vehicles which are equipped with the OBD-II or the vehicles which are made since 1996 up to the present. The specifications on the definition, the troubleshooting steps as well as repairs can always vary from one vehicle make to another.

This can happen because of a lot of reasons and the mechanic should diagnose the specific cause for this code.

PCM and TCM utilizes calculations based upon throttle position, engine load, engine speed, and vehicle speed to determine the desired gear to go into. If the PCM/TCM is unable to get the correct information from the Gear Shift Control Module, a code will be stored and a malfunction indicator lamp may be illuminated.

What causes this problem with the Gear Shift Control Module "B" Performance?

• Transmission fluid dirty or insufficient levels
• Transmission failure
• Fluid filter clogged or worn out pump
• Transmission main control internal blockage
• Solenoid, torque converter clutch or internal blockage
• Shift wirings or solenoids failure
• Transmission control module failure
• Defective torque converter clutch
• Defective PCM/TCM
• Malfunctioned Gear Shift Control Module

1. Automatic Transmission Solenoid - Faulty solenoids can affect the performance of transmission control system and should be replaced immediately. Buy new solenoids and replace the faulty one now!
2. Transmission Control Module - The TCM can also be faulty, causing problems with the transmission and gear ratios. Replace faulty module today.
3. Automatic Transmission Sensor - It can be a case that the transmission sensor is unable to detect the engine speed and throttle response properly in order to select the correct gear transmissions. Buy new sensor now!
4. Auto Transmission Torque Converter - Defective torque converter will affect the transmission system and thus the overall performance of the vehicle. Buy new torque converter today!
5. Engine Control Module - OBD Error Code P085E can also be due to faulty ECMs. Replace faulty ECM components with us.
6. Powertrain Control Module - P085E error code also relates to problems with the powertrain that is not able to generate response in time causing distorted engine timing. Find all the Powertrain related parts with us.
7. Diagnostic Tool - Always use professional diagnostic tools to detect the problems in relation the specific OBD code. Visit us today to grab amazing deals.
8. Oxygen Sensor - It is important to check the faulty oxygen sensor at it immensely hampers the engine performance an output. Buy new oxygen sensor from us!
9. Catalytic Converter - Faulty catalytic converter will lead to increase in toxic emissions from the exhaust and thus needs to be replaced at instance. Buy new catalytic converter now!
10. Ignition System Parts - Ignition timing is really important in any vehicle and thus the ignition parts needs proper inspection and must be replaced, if required. Buy all ignition system parts from us!
11. Exhaust System Parts - Increased emission and smoke from the exhaust means that the exhaust system is compromised. Thus, thorough check are required and damaged parts must be replaced at first instance.
12. Cylinder Head Gaskets - Air leakages in the cylinder will lead to pressure losses thus affecting the combustion process and can be due to fault head gaskets. Buy new cylinder head gaskets from us.

We at Parts Avatar Canada care for our customers, and that’s why we will help you to diagnose P085E code by listing out some major symptoms. They are mentioned below as follows

Common Symptoms

• Fuel pressure decreased
• There can be rich or lean exhaust condition
• Reduced fuel efficiency
• Lowered engine performance, especially at low RPM levels

Learn the ways with which you can correct this trouble code:

• Repair or replace any corroded or damaged wires in and around the transmission control module
• Replace transmission fluid and wiring, if not in working condition
• Repair or replace problem with the pump
• Replace faulty shift solenoids
• Replace faulty torque converter
• Repair or replace faulty catalytic converter
• Repair or replace defective ignition system parts
• Replace Gear Shift Control Module
• Repair, replace or reprogram PCM/PCM errors

Don’t get tensed if you are still facing any of these issues as we care for our customers and that’s why we offer a good range of Transmission, Gear Shift Control Module, PCM, TCM, Oxygen Sensor, Actuator, Fuel Pressure, Exhaust, RPM, Fuel Pump, VCT Solenoid, VCT Solenoid Valve and a lot more. We are sure that now all your issues would be resolved.

It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P085E code to be stored:

• Begin with a visual inspection of all wiring and connectors. Repair or replace damaged, disconnected, shorted, or corroded wiring, connectors, and components as necessary.
• Retest the system after repairs are completed to ensure success. If all system wiring, connectors, and components appear to be in normal working order, connect the scanner (or code reader) to the diagnostic connector and record all stored codes and freeze frame data.
• Check the fluid in the transmission should be checked for quality, and the level of fluid prior to further diagnostic tests. Replace old or dirty fluid as required.
• Perform a torque converter stall speed test to determine if the engine stall speed is within factory specifications. The engine speed must match the readings from the transmission sensor.
• Faulty TCM (Transmission Control Module) and PCM should also be repaired, reprogrammed or replaced as required.
• Perform an emission test of the vehicle. If the vehicle fails the test, their might be an issue of faulty catalytic converter or other mechanical parts leading to increased emissions. Replace the faulty parts, if required.
• Also check for proper ignition timing and check for mechanical faults leading to this problem and repair or replace the damaged components.

Common Mistakes When Diagnosing the P085E Code

• Some of the common mistakes done while changing diagnosing the OBD code P085E are:
• Directly replacing the TCM without evaluation
• Simply replacing the Powertrain Control Module (PCM) without considering other possibilities of problem
• Not checking the damaged or loosened wiring and circuit problems