Guide To P0983 OBD Error Code Solutions

<<See All OBD Codes

The Engine Control Module or the ECM of the vehicle holds the capacity to command shifting of gears. It does so, by turning the shift solenoid valves on or off as per requirement by the driver. If there’s an open or even short circuit in this shift solenoid valve circuit, the ECM will detect the issue and set the code P0983. After setting the code the check engine light will be illuminated. The ECM will then perform a fail-safe function by turning the other shift solenoids which are in good condition on or off as needed.

In order to apply various clutch packs needed to set different gear ratios, the Transmission Control Module or TCM uses the shift solenoids to control hydraulic pressure in the transmission. This hydraulic pressure is needed for the application of the clutch packs present in the transmission. It is important that vehicle efficiently drive on the road, and hence the gear ratios hold great significance. When the TCM is able to detect malfunction in the pressure control solenoid it will proceed to set P0983 code.

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

• Issue in the Shift Solenoid Valve S4
• Open or shorted harness of the line pressure solenoid valve S4
• Pool electrical connection found in the circuit of line pressure solenoid valve S4
• Issue with the Engine Control Module (ECM)

1. Engine Control Module - In order to get rid of P0983 code, you may have to replace your ECM module, but don’t worry, Parts Avatar has the best reliable auto-parts for you. The best part is you can order online from the comfort of your home and have i delivered right to your doorstep within days.
2. Shift/Solenoid Valve - Try to repair the issue with the valve and see if the P0983 code clears. If not, you will have to replace it with a new one. We stock a wide variety of vehicle compatible auto-parts, search on our website or take support from our customer case exec available 24/7. We offer 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 P0983 code. We stock a wide range of brands for you to select as per your requirement.

It is vital 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 P0983 here:

Common Symptoms

• Decreased fuel efficiency
• Improper shifting of the Transmission
• The check engine light is On

It is very important to fix the fault code P0983. So here are some ways with which you can correct this issue:

• Repair or replace issues with circuits, wires, and connectors
• Repair or replace the valve
• Repair or replace the Powertrain Control Module

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 ECM, Solenoid Valve solenoid and a lot more. We are sure that now all your issues would be resolved.

Here are some steps which you should follow in order to diagnose this P0983 fault code:

Keeping in mind that the P0983 describes an electrical problem, you will need some tools during the process of diagnosis. Get hold of a digital volt/ohm meter or DVOM and a reliable vehicle information source. Find the Technical Service Bulletins for your specific vehicles make, model, engine and year of manufacturing and match it to the symptoms as well as the OBD code. In the TSB you will find all the wiring diagrams, connector pinout charts, component locations/maps etc. These will all be of great help to you. Once you have all this, you can start your diagnosis.

Start off by checking the wiring harness, begin from the ECM and TCM following up to the transmission. Be observant and note any signs of damage, like rodent infestation or poorly-routed harness. Accordingly, you can fix them via repairs, you may also have to replace them. Don’t ignore a chafed wire harness, because it can very easily cause an open or shorted circuit.

Now it’s time to check the connectors, if they are properly connected or not. Disconnect all the connectors and see if there are any bent pins, or corrosion. There may also be water entry, so be observant about that too. The intermediate connectors like the ones present at the firewall or those connecting the transmission sub-harness and engine harness also have to be checked. To be able to spot these checkpoints you will need the help of an accurate Electrical Wiring diagram.

Once you have sorted the connectors, it’s now the turn of the circuits, turn the key off and use the EWD and DVOM and find out which circuits are carrying the signal from shift solenoid D. You should be able to perform resistance check from the TCM to SSF inclusive of the harness from the disconnected ECM or TCM connector. You will have to check resistance between two terminals or between one terminal and body ground, this will dependent on the make and model of your vehicle. To be sure refer the EWD, typically the resistance should be roughly between 10 Ω and 20 Ω.

Common Mistakes When Diagnosing The P0983 Code

• Failure of the Transmission Control Module (TCM) failure
• Low automatic transmission fluid level
• Failed Transmission shift solenoid
• Wiring problems such as damages