OBD-II Generic Error Code P0803: How to Fix It

Q: What does P0803 mean?

P0803 indicates a malfunction in the electrical circuit controlling the 1-4 upshift skip solenoid, which affects skip-shift functionality in some manual transmissions.

Q: Can I drive with P0803?

You can drive short distances, but the transmission may shift poorly. It's best to fix it promptly to avoid further damage.

Q: Where is the 1-4 upshift skip solenoid located?

It is typically located inside the transmission, attached to the valve body, often accessible after removing the transmission pan.

Q: How much does it cost to fix P0803?

DIY cost is around $50-150 for the solenoid and fluid. Professional repair may cost $200-500.

Q: Do I need to reprogram the PCM after replacing the solenoid?

Usually not—replacement is plug-and-play. However, always clear the code and perform a relearn procedure if specified by manufacturer.

Abstract

Error code P0803 indicates a problem in the control circuit for the 1-4 upshift skip solenoid in your vehicle. This solenoid prevents shifting from 1st directly to 4th gear under certain conditions to improve fuel economy. When the circuit fails, the transmission may exhibit harsh shifts or stay in lower gears.