P06C5 Cylinder 1 Glow Plug Incorrect

OBD2 Code: P06C5

Description: Cylinder 1 Glow Plug Incorrect

Definition: The OBD-II code P06C5 is a generic powertrain code that indicates a problem with the glow plug circuit in cylinder 1. This code is triggered when the Engine Control Module (ECM) detects an incorrect signal or malfunction in the glow plug for cylinder 1, which can affect engine starting and performance, especially in cold conditions.

p06c5 – Cylinder 1 Glow Plug Incorrect

Typical Severity: Moderate

Common Causes

P06C5 – Cylinder 1 Glow Plug Incorrect

Common causes:

• Faulty glow plug in cylinder 1
• Wiring issues related to the glow plug circuit
• Defective glow plug control module
• Corrosion or poor connection in the glow plug system

 

Common Misdiagnosis

OBD2 Code: P06C5

Description: Cylinder 1 Glow Plug Incorrect

Common Misdiagnosis: Replacing the glow plug without checking the wiring or control module.

 

Common Diagnostic Steps

OBD2 Code: P06C5

Description: Cylinder 1 Glow Plug Incorrect

Common Diagnostic Steps:

• Verify the code using an OBD2 scanner and clear it to see if it returns.
• Inspect the glow plug for physical damage or wear.
• Check the wiring and connectors leading to cylinder 1’s glow plug for any signs of corrosion, damage, or disconnection.
• Test the resistance of the glow plug using a multimeter to ensure it is within manufacturer specifications.
• Examine the glow plug control module for faults or malfunctions.
• If applicable, update the vehicle’s ECU software to address known issues related to this code.
• If necessary, replace the faulty glow plug with a new one that meets OEM standards.