Error Code P0981: What It Means & What To Do?

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The OBD-II error code P0981 Transmission may not shift properly is also defines as a shift solenoid “D” control circuit performance/range. The vehicles TCM or Transmission Control Module control the hydraulic pressure via the shift solenoids. This hydraulic pressure in the transmission is controlled because it is needed in order to apply the different clutch packs in the transmission. These clutch packs in turn provide the various gear ratios because of whom the vehicle is able to efficiently propel down the road. When the TCM is able to detect that the pressure control solenoids performance is not as desired, it will proceed to set P0981 code.

The gear shift solenoid valves are turned On/Off by the commands given by the Engine Control Module or the ECM in order to shift gears. If there’s an open or even short circuit in any of the shift solenoid valve circuits, the problem will immediately be picked by the ECM and the check engine light will be illuminated along with the P0981 code. The ECm also performs the fail-safe function, turning the other shift solenoid valves in good condition On/Off.

What causes this problem with the Shift Solenoid "D" Control Circuit Range/Performance?

• Open or shorted harness of the Air fuel ratio (A/F) Sensor 1 Bank 1
• Problems in the Intake Valve Timing Control Solenoid Valve
• The Fuel filler cap either remains open or fails to close as needed
• Malfunctioning of the Engine Control Module (ECM)

1. Transmission Shift Solenoid - Try to fix any repairs that will help in resolving the P0981 code. If you have to opt for replacement, don’t worry at all, Parts Avatar has you covered with the best quality branded auto parts. You can order online from the comfort of your home and have it delivered right to your doorstep, within a matter of days.
2. Automatic Transmission Module - Replace the module and get rid of the P0981 code. Simply order online and save up on cross border shipping!, We are 100% Canadian and ship to the remotest corners of the country. Avail free shipping on orders over CAD $99!
3. Engine Control Module - Replace your ECM is needed with Parts Avatar. We have a wide range of auto parts that you buy online from the comfort of your home. Take help from our online customer service 24/7 to get exactly what you’re looking for.
4. Powertrain Control Module - A very crucial part of your vehicle, buy only the best from us. Avail free shipping on orders over $99. We ship to the remotest corners of Canada!
5. Diagnostic Tools - Only the best and accurate diagnostic tools will help you when trying to resolve the P0981 code. We stock a wide range of brands for you to select as per your requirement.

After knowing all the cause behind the issues, let’s have a look at few common symptoms of this problem. Read through this section to learn more about this error code.

Common Symptoms

• Decreased fuel economy
• Transmission shoes difficulty in shifting
• Check Engine Light On

Wish to correct this error code with your vehicle? Do you know what all you should do to make your car free from this code? Well, don’t worry! We are here to guide you.

• Repair or replace the Transmission Control System or its components as required
• Check for leakages oil or coolant

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

It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P0981 code to be stored:

The P0981 code is indicative of a performance related problem with the “D” shift solenoid. This could be due to a failed sensor, an issue with wiring, or a problem with the ECM/TCM. You will have to get hold of wiring diagrams for your specific vehicle to be able to diagnose the SSD. In tools, you will need a digital volt-ohm meter to check resistance and continuity of the SSD and also the wiring harness.

Start off with the inspection of the wiring harness, you will find many electrical problems that are related to the wiring issue, or even poor connections. Refer your wiring diagram to figure out which module is communicating with the SSD. Now, trace the wiring harness going from the module to the transmission. Be patient and observant of any breaks in the wire, damages such as corrosion or poor connections. Pay special attention to ensure that the lock tab of each connector is fully seated otherwise it could result in poor communication, which hence leads to the code being set for poor performance of the SSD.

After you’re done inspecting the wires, it’s time to remove and inspect each connector in the wiring harness for the transmission harness. You are looking for presence of any moisture in the connector, or corrosion on the pins/ terminals, there may also be bent or damaged pints or dirt and debris inside the connector. Any of these found will have to be cleaned properly, repair all the damaged parts and replace those which are beyond repair. Now reconnect them and ensure the connectors are fully seated and secures with the lock tab.

Now it’s time to check for continuity at the TCM harness, use the DVOM for this. Start off by disconnecting the connector from the TCM module, now locate the signal circuit on the connector. You can do this by referring the vehicle information source and the diagrams in it. With the DVOM test the signal circuit for continuity to the chassis ground, it should be present. If it is present, then check the signal wire for a short to the ground, for this you will have to wiggle the wiring harness connectors as well as the wiring harness. Note any fluctuations that may occur in the continuity, these will be indicative of an intermittent connection. Now it’s time to check the SSD ground circuit wire to chassis ground in the same manner. You should find continuity if not, then check for a break in the ground circuit for the SSD.

Common Mistakes When Diagnosing The P0981 Code

• Assuming a failure of the Transmission Control Module (TCM)
• The level of Transmission fluid is low
• Malfunction of the Transmission shift solenoid
• Problems with the wiring