Powertrain, generic · Computer and auxiliary outputs

P06F5 Glow Plug Control Module 2

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modeNo

SAE J2012 provides a complete code family for a second glow plug control module, mirroring module 1 code for code. P06F5 is the general or internal fault of module 2, the counterpart of P064C. For module 1, GM's L5P groups driver faults (under 3.2 A with 0 V at the plug for 3.5 s) and a ROM checksum error under P064C, after two trips; Ford's 2023 Power Stroke lists P064C among the module checks with detection in about 1 s. 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 (P064C). The plugs fed by module 2 then heat poorly or not at all.

Likely causes

Glow plug control module 2 faulty internally
Poor supply or ground of module 2
Module software or configuration

Symptoms

  • 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

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€100–700
Time0.5–3 h

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

Parts involved

glow plug control module 2module power supplymodule ground

Related codes

P064CP06F9P06FAP06FBP06FCP263F

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