FICM Relay Control Circuit
The POWERSTROKE-P0612 (Power Stroke) diesel fault code means: FICM Relay Control Circuit. This is a serious severity code.
- Keep driving?
- No -- stop driving
- DIY difficulty
- intermediate
- Estimated cost
- $50-$400
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Common Symptoms
- No start
- Intermittent start
- CEL
Probable Causes (Ranked by Likelihood)
- Failed FICM relay Likely
- Open wiring in relay control circuit Likely
- PCM driver failure Possible
Step-by-Step Diagnostic Procedure
Swap FICM relay with known good.
Check wiring between PCM and relay.
Frequently Asked Questions
What is P0612 on a 6.0L Power Stroke?
P0612 on a 6.0L Power Stroke (2003-2007) indicates: FICM Relay Control Circuit. This is a known diagnostic trouble code on this engine family and typically points to the causes listed above.
Can I drive with P0612 on my Power Stroke?
No. Stop driving and arrange for towing. Continued operation risks serious engine or emissions system damage.
How much does it cost to fix P0612?
Repair cost is typically $50-$400 depending on the underlying cause and whether you DIY or use a shop. Diagnostic time alone runs $100-$180 at most independent diesel shops.
P0612 on Other Platforms
The same code ID appears across other engines, vehicles, and equipment. Diagnostic flow varies by platform — see the matching breakdown: