Powertrain
generic / SAE
P23CA
Fuel Rail Heater Control Circuit Open
The fuel rail heater - on common-rail diesels for cold-start - has an open control circuit. The rail cannot be heated, slowing cold-start fuel atomisation.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number3 / CA
Possible causes
- Open in heater or wiring high
- Pin pushed back out of connector body low
- Cracked solder joint inside the module or sensor low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 120–450 €
- Estimated time: 0.6–2 h
- Component: fuel rail heater
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012