Shift Sensor Performance Problem
Indicates a problem with the shift sensor for the transmission.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The shift sensor isn't working right, making it hard for the transmission to change gears smoothly.
What the computer is actually seeing
The transmission control module (TCM) detects that the shift sensor voltage is outside of the expected range, usually measured in volts, and assumes there's a problem with either the sensor or the wiring.
What a healthy reading looks like
Shift sensor voltage should be between 0.5V and 4.5V depending on gear selection; TCM expects a specific voltage when shifting.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Inspect the wiring and connectors related to the shift sensor; look for frays, breaks, or corrosion. If damaged, repair or replace.
- 22. Check the transmission fluid level; top off if low and inspect for leaks. Correct level is usually between the 'Add' and 'Full' marks when warm.
- 33. Test the shift sensor with a multimeter; expect it to output between 0.5V and 4.5V while cycling through gears. If out of range, replace the sensor.
- 44. Scan the TCM for additional codes, especially related to transmission; address those before continuing with repairs.
- 55. If the sensor is new and wiring is solid, test or replace the TCM, since it might misinterpret the sensor's signals.
Common causes
- Faulty shift sensor
- Wiring issues or loose connections in the sensor circuit
- Transmission fluid issues or low fluid level
- Faulty transmission control module (TCM)
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's moderate; drivability may be affected, but it's generally safe short term unless you notice severe shifting issues.
Will this code come back after I clear it?
If the underlying issue isn't fixed, the code will likely return after a few driving cycles.
Can this code be linked to performance issues?
Yes, if the shift sensor isn't functioning properly, you may experience harsh shifts or slipping.
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