OBD Guide
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P036B

Ignition G Control Signal Circuit Low

P036B is an OBD-II diagnostic trouble code meaning: Ignition G Control Signal Circuit Low. Common causes: g coil control circuit wiring short to ground, ignition coil g fault (internal short circuit). Estimated repair cost: $33–278.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$33–278 (est.)

Symptoms

  • Misfire or complete lack of spark in the cylinders of the coil G
  • Unstable idle
  • Possible overheating of the coil or wiring
  • Check Engine Light Is On
  • In severe cases, it is impossible to start the engine

Causes

  • G coil control circuit wiring short to ground
  • Ignition coil G fault (internal short circuit)
  • Damage to the coil connector (contact is shorted to the body)
  • ECU control transistor malfunction
  • Moisture in the connector or coil

How to Fix

  1. Read error codes, freeze frame data
  2. Disconnect the coil connector G and check for an error - if it disappears, the problem is in the coil
  3. Check the short-circuit wiring between the coil connector and the ECU to ground (multimeter in Ohm mode)
  4. Inspect the wiring for pinches on metal parts
  5. Check the resistance of the primary winding of the coil G
  6. Replace the coil or eliminate short circuit in the wiring

Related codes

P031CP031FP0351P0352P0356P0357

Error P036B by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P036B code mean?

P036B is an OBD-II diagnostic trouble code that indicates: Ignition G Control Signal Circuit Low

What causes a P036B error code?

The most common causes of P036B include: G coil control circuit wiring short to ground; Ignition coil G fault (internal short circuit); Damage to the coil connector (contact is shorted to the body); ECU control transistor malfunction.

How do I fix a P036B diagnostic trouble code?

To fix P036B: Read error codes, freeze frame data. Disconnect the coil connector G and check for an error - if it disappears, the problem is in the coil. Check the short-circuit wiring between the coil connector and the ECU to ground (multimeter in Ohm mode). For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P036B?

Do not drive — repair immediately

How much does it cost to fix P036B?

The estimated repair cost for P036B is $33–278. Actual cost depends on your vehicle, location, and labor rates.

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