P0612

Fuel Injector Control Module Relay Control

Q: 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.

Q: 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.

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.

Real-world scan data

Seen in

109

scans in the past year

Found in

<0.1%

of scans

<0.1%

of scans that found faults

Appears alongside · share of P0612 scans

P0300in 46.8% of scans

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

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.

Read & clear P0612 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX