Powertrain, generic (extended)

P263E Glow Plug Control Module 1 Over Temperature

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modeNo

The first glow plug control module measures its own internal temperature and reports P263E when it runs too hot, since its power semiconductors carry tens of amps during glowing. GM's 6.6 L L5P Duramax tables set it at a module temperature above 123 °C while the plugs are commanded on and coolant is below 60 °C, type B. Ford's 2023 diesel summary for the 6.7 L and 3.0 L names more than 125 °C inside the module. FCA bulletin 09-009-15 for 2014-15 Ram ProMaster vans with the 3.0 L diesel lists P263E among glow plug codes caused by plugs lacking an internal O-ring and replaces all four plugs. Heat can also come from repeated or very long glow cycles in deep cold. Driver faults are P263C, a second module would report P263F.

Likely causes

Defective glow plugs drawing excess current (e.g. Ram ProMaster plugs without O-ring)
Repeated start attempts or very long glow periods in severe cold
Internal fault or poor heat dissipation of the glow plug module

Symptoms

  • Check engine light, glow lamp flashing
  • Glowing cut short, hard cold starts
  • White smoke after cold start

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€100–900
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

glow plug control moduleglow plugs

Related codes

P263CP263FP064CP06E5P0671

References: gsi.ext.gm.com, fordservicecontent.com, static.nhtsa.gov.