OBD-II code · Powertrain (generic)
P08B4 Clutch Pedal Position Sensor B Circuit/Open
The clutch pedal position sensor B reports a circuit/open fault. Redundant pedal position channel is unreliable.
Is it safe to drive with P08B4?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyPosition sensor failed
- PossibleWiring fault
- Less likelyPin pushed back out of connector body
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
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–2 h
- Emissions test
- Usually unaffected
- Parts involved
- Clutch Pedal Position Sensor B, Wiring Harness, Ecm
Related codes
- P08A7Clutch Pedal Position Sensor A Circuit/Open
- P08B1Neutral Position Sensor B Circuit Intermittent/Erratic
- P08B2Neutral Position Sensor A/B Correlation
- P08B3Neutral Position Sensor B Not Learned
- P08B5Clutch Pedal Position Sensor B Circuit Range/Performance
- P08B6Clutch Pedal Position Sensor B Circuit Low
- P08B7Clutch Pedal Position Sensor B Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.