OBD-II code · Powertrain (generic)
P0612 Fuel Injector Control Module Relay Control
A circuit fault on the relay that powers the injector driver module - either control line or contact integrity issue.
Is it safe to drive with P0612?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyRelay control or contact fault
Symptoms
- Check engine light on
- Misfire or rough idle on the affected cylinder
- Increased fuel consumption
- Possible fuel smell or smoke from exhaust
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–1.8 h
- Emissions test
- Likely to fail
- Parts involved
- Fuel Injector Control Module, Injector Module Relay
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.