Powertrain
generic / SAE
P23D9
Cylinder 3 Fuel Heater Control Circuit Open
Per-cylinder fuel heaters (used on some heavy-duty diesels for cold-start atomisation) on cylinder 3 have an open control circuit.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number3 / D9
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: 80–350 €
- Estimated time: 0.5–1.8 h
- Component: fuel heater cyl 3
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012