P06FAGlow Plug Control Module 2 Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- P06FA means glow plug control module 2 does not respond correctly to the glow command – the counterpart of P06E5 for module 1. For module 1, Ford's 2023 Power Stroke flags internal drivers that fail to switch or overheat for more than 1 s; GM's L5P files the same check under P064C (under 3.2 A with 0 V at the plug for 3.5 s, two trips). No manufacturer document available to us uses a second glow module – Ford's and GM's V8 diesels drive all eight plugs from one; the code suits systems with one module per cylinder bank. The description follows module 1 (P06E5). Internal checksum errors are P06FB, overheating P263F. The plugs of module 2 then heat poorly or not at all, typically on one bank.
- What you may notice
- Check engine light, possibly glow plug/wait-to-start lamp
- Hard cold start, long cranking in frost
- Rough cold idle and white smoke, often one cylinder bank only
- Usually no symptoms when warm
- Likely causes
- LikelyGlow module 2 faulty internally (drivers do not switch)
- PossiblePoor supply or ground of module 2
- PossibleModule overheating
- RareModule software
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €100 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.