OBD Guide
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P06C1

Cylinder 9 Glow Plug Circuit Range/Performance

P06C1 is an OBD-II diagnostic trouble code meaning: Cylinder 9 Glow Plug Circuit Range/Performance. Common causes: wear of the heating element of the glow plug of cylinder 9, poor contact or oxidation in the spark plug connector. Estimated repair cost: $6–28.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$6–28 (est.)

Symptoms

  • Slightly difficult cold engine start
  • Check Engine Light Is On
  • White smoke from the exhaust pipe at low temperatures
  • Unstable engine operation when warming up in cold weather
  • Increased starter cranking time

Causes

  • Wear of the heating element of the glow plug of cylinder 9
  • Poor contact or oxidation in the spark plug connector
  • Partial damage to control circuit wiring
  • Incipient failure of the relay or spark plug control module
  • Corrosion of the terminal on the spark plug itself

How to Fix

  1. Read error codes, record frozen frame data
  2. Measure the resistance of the glow plug of cylinder 9 (standard 0.5–2 Ohm)
  3. Inspect the spark plug connector and terminal, clean from oxidation
  4. Measure the current through the spark plug when warming up using current clamps
  5. Replace the glow plug when a deviation in parameters is confirmed
  6. Reset codes and check for errors after repair

Related codes

P06B9P06BAP0671P0675P0678

Error P06C1 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P06C1 code mean?

P06C1 is an OBD-II diagnostic trouble code that indicates: Cylinder 9 Glow Plug Circuit Range/Performance

What causes a P06C1 error code?

The most common causes of P06C1 include: Wear of the heating element of the glow plug of cylinder 9; Poor contact or oxidation in the spark plug connector; Partial damage to control circuit wiring; Incipient failure of the relay or spark plug control module.

How do I fix a P06C1 diagnostic trouble code?

To fix P06C1: Read error codes, record frozen frame data. Measure the resistance of the glow plug of cylinder 9 (standard 0.5–2 Ohm). Inspect the spark plug connector and terminal, clean from oxidation. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P06C1?

Yes, but get it checked soon

How much does it cost to fix P06C1?

The estimated repair cost for P06C1 is $6–28. Actual cost depends on your vehicle, location, and labor rates.

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