In order to determine things like shift patterns, cruise control operation and when to allow the engine to start, the ECU has to know what gear the shift lever has been placed in. This data is provided by the gate select position sensor/GSP sensor. But if there is an unusually high-voltage signal coming from the GSP sensor circuit, a P0907 DTC will be saved.
How Serious is the Code?
The P0907 diagnostic trouble code is actually pretty serious, because without the information that it provides, in a number of serious drivability issues can occur.
Symptoms of a P0907 include:
- Engine refuses to start
- Erratic shift pattern
- Delayed and/or harsh shifts
- Cruise control stops working correctly
- Misalignment of the gate select position sensor
- Shift linkage out of adjustment
- Faulty gate select position sensor
How to Diagnose the Code?
Many times, the gate select position sensor can become misaligned after transmission repairs have occurred. So when trying to diagnose the cause of a P0907 OBDII trouble code, it’s important to check the adjustment of the GSP sensor. The shift linkage may also need to be checked.
What Repairs Will Fix P0907?
- Adjust gate selection position sensor
- Adjust shift linkage
- Replace GSP sensor
- P0904 – Gate Select Position Circuit
- P0905 – Gate Select Position Circuit Range/Performance
- P0906 – Gate Select Position Circuit Low
- P0908 – Gate Select Position Circuit Intermittent