POWERSTROKE-P0612 serious Power Stroke ›

Fuel Injector Control Module Relay Control

The POWERSTROKE-P0612 (Power Stroke) diesel fault code means: Fuel Injector Control Module Relay Control. This is a serious severity code.

My Garage →
Keep driving?
No — stop driving
DIY difficulty
intermediate
Mobile mechanic network · I-5 corridor pilot

Down with a Power Stroke fault on the road?

We are building a network of verified mobile diesel and reefer technicians along the freight corridor. It is not live yet — no one can be dispatched to you today. You can see where the pilot is launching and register interest.

View pilot availability →
Built for Diesel — Not a Car Reader
ANCEL HD7000 Heavy-Duty Diesel Scanner

A $30 car code reader can't do diesel. The HD7000 reads full-system codes and does parked DPF regen, idle/speed-limit, and service resets from the cab — on everything from a 6.7 Cummins/Power Stroke/Duramax pickup to Class-8 trucks (Detroit, Paccar, CAT, Volvo, Mack, International).

Check Price on Amazon
FOXWELL HD301 Diesel Truck Scanner
Lower-Cost Diesel Option
FOXWELL HD301 Diesel Truck Scanner

Full-system 6/9/16-pin diesel scan tool for Cummins, Paccar, CAT, Detroit and more — plug-and-play, no subscription. A cheaper way to read heavy-duty codes a basic OBD2 scanner skips entirely.

Check Price on Amazon

Affiliate links — we earn a commission at no extra cost to you.

What Are the Symptoms of POWERSTROKE-P0612?

  • Check Engine Light on
  • Hard starting or no start
  • Possible stalling

What Causes POWERSTROKE-P0612? (Most Likely First)

  • Failed injector control module relay High
  • Open or shorted relay control wiring Moderate
  • Loose or corroded relay socket Moderate
  • Engine computer driver fault Low

Can I Still Drive with POWERSTROKE-P0612?

No — stop driving. POWERSTROKE-P0612 is rated serious severity. Continuing to drive in this state risks further damage — get it looked at before your next trip.

Frequently Asked Questions

What does P0612 mean on a Power Stroke?

P0612 means Fuel Injector Control Module Relay Control. The engine computer has detected a fault in the control circuit of the relay that powers the fuel injector control module.

Is P0612 a Power Stroke-specific code?

No. P0612 is a generic OBD-II code defined by SAE J2012, so it means the same thing on any vehicle that sets it. The exact conditions Ford uses to set it on its diesels are in Ford service information.

Mechanics Guide Step-by-step diagnosis

How Do You Diagnose POWERSTROKE-P0612?

  1. Check the relay and its socket.

  2. Check the relay control circuit for an open or a short.

  3. Check power at the injector control module with the key on.

Sources 1

This page is built from documented references. Verify against your own service info before repair work.

  • SAE J2012Diagnostic Trouble Code Definitions (defines P0612 as a generic OBD-II code)

P0612 on Other Platforms

The same code ID appears across other engines, vehicles, and equipment. Diagnostic flow varies by platform — see the matching breakdown:

Gas / Automotive (OBD-II) Generic OBD-II definition for P0612

Explore More

More Power Stroke codes → Diesel home All diesel codes Heavy-duty Guides

Was this helpful?

Send this to whoever is fixing the truck — your tech, or the person asking what the fault means.