P07BE
Transmission Park Position Sensor/Switch A/B Correlation
The two redundant park position sensors A and B disagree — one reports Park, the other does not. Until the discrepancy is cleared the TCM cannot trust either reading and falls back to a safe state (typically blocking key removal and engine restart).
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Common causes
Ordered by how often each turns out to be the cause.
- One of the two sensors drifting outside toleranceCommon
- Mis-adjusted shift lever mechanismPossible
Parts involved
- Park Position Sensor A
- Park Position Sensor B
P07BE is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.