Powertrain
generic / SAE
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).
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number7 / BE
Possible causes
- One of the two sensors drifting outside tolerance high
- Mis-adjusted shift lever mechanism medium
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
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 200–1000 €
- Estimated time: 0.8–3.5 h
- Component: park position sensor a
- Component: park position sensor b
- MIL / check engine light
Sources
References
sae:J2012