Powertrain
generic / SAE
P0378
Timing Reference High Resolution Signal B Intermittent/Erratic Pulses
Timing reference signal B pulses are erratic — connector or wiring intermittent, contamination on tone wheel, or sensor partially failed.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number3 / 78
Possible causes
- Intermittent connector or contamination high
- Connector with intermittent contact under vibration low
- Harness routed against vibrating component low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 80–600 €
- Estimated time: 0.5–2.5 h
- Component: camshaft position sensor
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012