P0986 OBD Error Code: Problem & Solutions

<<See All OBD Codes

In your vehicle shifting from gears between 1st and 5th requires a combination of and on and off operation of the shift solenoid valves. These are namely; SL1, SL2, SL3, S4 and SR and are controlled by the Engine Control Module or the ECM module. Due to any reason if a short or open circuit occurs in any of the shift solenoid valves then the ECM will operate in fail safe function. It will basically coordinate the solenoids that are working properly so that the vehicle can function smoothly. The check engine light will be illuminated after the P0896 code is set.

The Transmission Control Module or the TCM is responsible for shifting gears, it does so by monitoring the hydraulic pressure in the transmission via the shift solenoids. This hydraulic pressure is used for applying various clutch packs that are present in the transmission. These clutch packs in turn provide the various gear ratios which enable a vehicle to run efficiently on road. If the TCM detects a malfunction of any of the pressure control solenoids it will set P0986 code.

What causes this problem with the Shift Solenoid "E" Control Circuit High?

• A problem with the pressure control solenoid valve 'E'  
• Open or shorted Pressure control solenoid valve 'E' harness
• Insufficient electrical connection in the Pressure control solenoid valve 'E' circuit
• Malfunctioning Engine Control Module (ECM)  
• Transmission fluid level is considerably lower than required
• Contaminated and hence unfit transmission fluid

1. Engine Control Module - Observing the issues you are facing try to Repair your ECM and see if the P0986 code persists. Or else simply replace it with Parts Avatar. You can order online and have it delivered right to your doorstep. Avail free shipping on orders above $99 value. Get rid of your P0986 code easily!
2. Auto Transmission Shift Solenoid Valve - See if repairing the problem helps with resolving P0986 code. However, if that doesn't work out, replacement will be the only other option.  Parts Avatar ships orders to the remotest corners of Canada. Order online today and track it till it reaches you. We stock a wide range of auto parts, so that you can find the one best suited and compatible to your vehicle.

It is essential to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD Code P0985 here:

Common Symptoms

• Fuel consumption has increased considerably
• Transmission showing problems with shifting
• Check Engine/ Service Engine soon Light is on

After you know the symptoms of your vehicle’s problem, it becomes easy to detect it and get started with solving it. So, next on our list is few common steps to correct this issue with your vehicle’s.

• Clean the contaminated automatic transmission fluid
• Refill low levels of auto transmission oil
• Repair or replace the solenoid valve causing problems
• Repair or replace faulty wiring, harnesses, cables and connectors as needed
• Repair or replace the Powertrain Control Module or PCM module

There is no need to be anxious as Parts Avatar – Car Parts Online is here to help you out! We have high grade ECM, control solenoid valve and a lot more for our precious customers.

Here are some steps which you should follow in order to diagnose this fault code:

This Diagnostic trouble code has to do with electrical problem, soin order to resolve the P0896 code you will require a DVOM or digital volt/ohm meter and a reliable vehicle information source. This source of vehicle information should be for your specific vehicle and provide wiring diagrams, connector pinout charts, and component locations so be able to diagnose the right parts and wiring as needed. This will be of tremendous help while performing circuit checks between the TCM and the transmission too.

First step is to check the wiring harness starting from the ECM and TCM going up to the transmission. Look for any signs of abnormalities or damages. You may find rodent infestation, burned wires, or poorly-routed harness. All these will need to be repaired or replaced depending on the extent of damage. If you find a chafed wire harness don’t ignore it, as it can potentially cause open or short circuit issues.

Move on to the connectors and see if they’re all connected properly. To be more thorough, disconnect them and check for any bent pins, water entry or corrosion of any kind. You may find intermediate connectors too (firewall or connecting the transmission sub harness and engine harness), so be careful and check them as well. Electrical Wiring Diagrams will help you locate the check points of all harnesses.

Circuit check is next in line, turn off the key and using the EWD as well as the DVOM determine which circuits are carrying the signal for SSE (Shift solenoid E). You will be able to perform resistance check starting from TCM to SSF including the harness from the disconnected ECM/TCM connector. The location of resistance check will heavily depend on your vehicle's make and model, so refer the manufacturer's specifications and see if the resistance between two terminals or between one terminal or body ground is needed. Usually the resistance should be in the range of 10 Ω and 20 Ω.

Common Mistakes When Diagnosing The P0986 Code

• Failure of the Transmission Control Module (TCM)
• Low Transmission fluid level
• Failed Transmission shift solenoid
• Problems with the wiring