OBD-II Generic Error Code P0980: How to Fix It

Q: Can I drive my car with a P0980 code?

You can drive short distances with a P0980 code, but it is not recommended for extended driving. The fault can cause the transmission to enter limp mode, limiting you to one or two gears, which makes highway driving unsafe. Continued driving with a faulty shift solenoid can also cause increased wear on transmission components and potentially lead to more expensive damage over time.

Q: What is Shift Solenoid D and what does it do?

Shift Solenoid D is an electro-hydraulic valve inside your automatic transmission. When the Transmission Control Module (TCM) sends an electrical signal to this solenoid, it opens or closes to direct hydraulic transmission fluid through specific passages, enabling the transmission to shift into the correct gear. A failure in this solenoid or its circuit prevents proper gear changes.

Q: How much does it cost to fix a P0980 code?

Repair costs vary widely depending on the root cause. If the fix is a simple wiring repair or connector cleaning, expect to pay $50–$150 in parts and labor. Replacing the shift solenoid itself typically costs $150–$400 including parts and labor, depending on its accessibility. If the TCM needs to be replaced and reprogrammed, costs can range from $500 to over $1,200 at a dealership or transmission specialist.

Q: What is the difference between P0980 and P0985?

P0980 refers to a low voltage condition in the Shift Solenoid D control circuit, meaning the TCM is detecting less voltage than expected — often caused by a short to ground, a failed solenoid, or a wiring fault. P0985 refers to a low voltage condition in Shift Solenoid E's control circuit. Both codes point to similar types of electrical faults but affect different solenoids within the transmission. If both codes appear together, suspect a common ground fault or a wiring harness issue affecting multiple solenoids.

Q: Will changing the transmission fluid fix a P0980 code?

Changing the transmission fluid alone is unlikely to fix a P0980 code, since this is an electrical circuit fault rather than a fluid-related issue. However, if the transmission fluid is severely degraded or contaminated with debris, it can sometimes interfere with solenoid operation. Fresh fluid and a clean transmission filter are good maintenance practices, but they will not resolve an underlying wiring, connector, solenoid, or TCM fault causing P0980.

Abstract

Error code P0980 indicates that your vehicle's transmission control module (TCM) has detected a lower-than-expected voltage in the control circuit for Shift Solenoid D. This solenoid is responsible for controlling hydraulic fluid flow inside the automatic transmission to enable smooth gear changes. Left unaddressed, this fault can cause erratic shifting, transmission slipping, or the vehicle getting stuck in a single gear (limp mode), so it's important to diagnose and fix it promptly.