OBD Guide
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P069C

Cylinder 10 Glow Plug Control Circuit Low

P069C is an OBD-II diagnostic trouble code meaning: Cylinder 10 Glow Plug Control Circuit Low. Common causes: short circuit to ground in the glow plug circuit of cylinder 10, faulty (burnt out) glow plug of cylinder 10. Estimated repair cost: $6–44.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$6–44 (est.)

Symptoms

  • Difficult or impossible cold starting of the engine
  • White smoke from exhaust pipe when starting
  • Check Engine Light Is On
  • Unstable engine operation on a cold engine
  • Increased starter operating time

Causes

  • Short circuit to ground in the glow plug circuit of cylinder 10
  • Faulty (burnt out) glow plug of cylinder 10
  • Damage to control circuit wiring or connector
  • Faulty relay or glow plug control module
  • Oxidation of ECU connector contacts

How to Fix

  1. Read all error codes using a diagnostic scanner
  2. Inspect the wiring and glow plug connector for cylinder 10
  3. Measure the resistance of the glow plug (standard 0.5–2 Ohm), replace if necessary
  4. Check glow plug relay, replace if faulty
  5. Check the wires from the ECU to the spark plug for opens and shorts
  6. Reset error codes, perform control check

Related codes

P069DP06C0P06C1P0671P0675

Error P069C by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P069C code mean?

P069C is an OBD-II diagnostic trouble code that indicates: Cylinder 10 Glow Plug Control Circuit Low

What causes a P069C error code?

The most common causes of P069C include: Short circuit to ground in the glow plug circuit of cylinder 10; Faulty (burnt out) glow plug of cylinder 10; Damage to control circuit wiring or connector; Faulty relay or glow plug control module.

How do I fix a P069C diagnostic trouble code?

To fix P069C: Read all error codes using a diagnostic scanner. Inspect the wiring and glow plug connector for cylinder 10. Measure the resistance of the glow plug (standard 0.5–2 Ohm), replace if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P069C?

Yes, but get it checked soon

How much does it cost to fix P069C?

The estimated repair cost for P069C is $6–44. Actual cost depends on your vehicle, location, and labor rates.

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