Powertrain
generic / SAE
P23DD
Cylinder 4 Fuel Heater Control Circuit Open
Per-cylinder fuel heaters (used on some heavy-duty diesels for cold-start atomisation) on cylinder 4 have an open control circuit.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number3 / DD
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
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References
sae:J2012