Traditional gasoline car fault

PO674 Diagnostic Code on 2006 Ford F350 6.0L: Glow Plug Issue and GPCM Testing Guide

I've tested the resistance at the connectors leading to the GPCM and found it within specifications for all glow plugs. However, the PO674 diagnostic code returns immediately af...

2006 Ford F350 6.0 L | P0674

2001 Ford F250 Super Duty 7.3L Engine Light On: P0308 and P0674 Fault Codes Explained

My 'Service Engine Soon' light is illuminated, and after using an OBD2 scanner, I've identified fault codes P0308 and P0674. Based on the codes, I suspect a misfire in cylinder ...

2001 Ford F250 Super Duty | P0308

P0674 Fault Code Resolution for 2009 Duramax Diesel Engine

I recently replaced all the glow plugs on my 2009 Duramax diesel engine due to persistent fault codes indicating issues with each glow plug. While all the glow plugs except #4 w...

Duramax diesel 2009 | P0674