OBD-II code · Powertrain (generic)
P07B7 Transmission Park Position Sensor/Switch A Circuit Intermittent/Erratic
Park position sensor A signal jumps or drops out — typically a worn switch with contact bounce or a loose connector at the shift lever module.
Is it safe to drive with P07B7?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySwitch contact bounce
- Less likelyConnector with intermittent contact under vibration
- Less likelyHarness routed against vibrating component
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
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–2 h
- Emissions test
- Usually unaffected
- Parts involved
- Park Position Sensor A
Related codes
- P07B2Transmission Park Position Sensor/Switch A Circuit/Open
- P07BDTransmission Park Position Sensor/Switch B Circuit Intermittent/Erratic
- P07B4Transmission Park Position Sensor/Switch A Circuit High
- P07B5Transmission Park Position Sensor/Switch A Circuit Performance/Low
- P07B6Transmission Park Position Sensor/Switch A Circuit Performance High
- P07B8Transmission Park Position Sensor/Switch B Circuit/Open
- P07B9Transmission Park Position Sensor/Switch B Circuit Low
- P07BATransmission Park Position Sensor/Switch B Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.