OBD-II code · Powertrain (generic)
P02FB Cold Start Fuel Injection Control Circuit/Open
The drive circuit for the cold-start auxiliary fuel injector or the cold-start ECU output is open. Some diesels use an extra cold-start injector to inject fuel into the intake manifold during very cold starts.
Is it safe to drive with P02FB?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyInjector winding open
- Less likelyPin pushed back out of connector body
- Less likelyCracked solder joint inside the module or sensor
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2.5 h
- Emissions test
- Likely to fail
- Parts involved
- Cold Start Injector
Related codes
- P02F8Cylinder 11 Injector Circuit Range/Performance
- P02F9Cylinder 12 Injector Circuit Range/Performance
- P02FADiesel Intake Air Flow Position Sensor Minimum/Maximum Stop Performance
- P02FCCold Start Fuel Injection Control Circuit Low
- P02FDCold Start Fuel Injection Control Circuit High
- P02FECold Start Fuel Injection Control Circuit Range/Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.