Powertrain
generic / SAE
P0377
Timing Reference High Resolution Signal B Too Few Pulses
Timing reference signal B delivers fewer pulses per crank revolution than expected — broken reluctor teeth, sensor air gap too wide, or tone wheel chipped.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number3 / 77
Possible causes
- Tone wheel teeth broken or sensor gap excessive high
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 200–1500 €
- Estimated time: 1–4 h
- Component: camshaft position sensor
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012