Glow Plug Control Module
Can I Drive?
Yes, But Fix Soon
DIY Difficulty
intermediate
Estimated Cost
$250-$700
What does MAXXFORCE-P0670-7 mean?
The MAXXFORCE-P0670-7 (MaxxForce) diesel fault code means: Glow Plug Control Module. This is a moderate severity code.
Common Symptoms
- Hard cold start
- CEL
Probable Causes (Ranked by Likelihood)
- Failed GPCM Likely
Step-by-Step Diagnostic Procedure
Verify 12V supply to GPCM.
Replace module.
Frequently Asked Questions
What is P0670 on a MaxxForce 7 (6.4L)?
P0670 on a MaxxForce 7 (6.4L) (2007-2013) indicates: Glow Plug Control Module. This is a known fault code on the MaxxForce engine family and typically points to the causes listed above.
Can I drive with P0670 on my MaxxForce?
Yes, you can generally drive with this code, but diagnose soon to prevent secondary damage.
How much does it cost to fix MaxxForce P0670?
Repair cost is typically $250-$700 depending on the underlying cause and shop rate. Many MaxxForce faults (especially EGR cooler, head bolt, and VGT repairs) are major expenses that drove fleet owners to repower with Cummins or retire these trucks early.