P0612
Fuel Injector Control Module Relay Control
Injector control module supply
Generic OBD-II
High
What it means
P0612 means the ECM/PCM has detected a fault in the relay that controls power to the fuel-injector control module (FICM). Because that module drives the injectors, a fault here can interrupt fuelling — leading to hard starting, misfires, stalling, or a no-start. The usual culprits are the relay itself, its power/ground, or the control-circuit wiring.
High
Can I keep driving? Don't rely on the vehicle — this relay powers the injector control module, so it can cause hard starting, stalling, or a no-start at any time.
Common symptoms
What you'll notice
- Check-engine light on
- Hard starting or a no-start
- Misfire, rough idle, or stalling
- Reduced power and hesitation on acceleration
Common causes
Most likely first
- Faulty fuel-injector control module (FICM) relayLikely
- Wiring or connector fault in the relay control circuitCommon
- Poor power or ground connection at the relayCommon
- Failed injector control moduleLess often
- ECM/PCM fault (rare)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and check the FICM relay, its socket, and control-circuit wiring for corrosion or looseness.
- Verify the relay switches and that power and ground reach the injector control module.
- Swap or replace the relay if it doesn't actuate on command.
- Repair wiring faults; if the module gets its supply but still faults, service the control module. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P0612?+
No, not reliably. This circuit feeds the injector control module, so the engine can stall or fail to start without warning. Get it fixed before depending on the vehicle.
Can I just clear P0612?+
It returns as soon as the relay or its wiring faults again. The underlying supply problem has to be repaired first.
Related codes
Often seen with P0612
Read & clear P0612 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX