Powertrain, generic (extended)

P269C Exhaust Aftertreatment Glow Plug Control Performance

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modeNo

P269C is the plausibility counterpart to the electrical control codes: the wires test fine, yet the control stage of the exhaust glow plug does not behave as commanded, for example a relay or driver that does not report the expected state or reacts too slowly. No manufacturer documents this code publicly. The closest documented case is Ford's 3.2 L Transit, where a vaporizer glow plug relay whose feedback disagrees with the command for about 60 s is a recorded fault, filed under P26A0 from 2017 and under P2689 before. CARB requires functional checks of such output components wherever feasible, beyond pure circuit continuity. An affected engine would lose or limit exhaust fuel vaporization, so regeneration suffers and the MIL can be expected.

Likely causes

Glow plug relay switching late or not at all
Faulty feedback signal from the relay or driver
Low system voltage during the control check

Symptoms

  • MIL on
  • Particulate filter regeneration incomplete

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€60–500
Time0.5–2 h

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

Parts involved

aftertreatment glow plugrelay

Related codes

P269BP269DP269EP26A0

References: law.cornell.edu, fordservicecontent.com.