P0675 Cylinder 5 Glow Plug Circuit

P0675 indicates a cylinder 5 glow plug circuit fault. The cylinder 5 glow plug circuit is not matching the expected electrical load.

Code details

Generic OBD-II · P0

System: Computer
Code type: Generic (SAE / ISO controlled)
Standard: SAE J2012 / ISO 15031-6

Diagnostic boundary

A diagnostic trouble code reports that a monitored test failed. It does not prove one specific part is bad, and manufacturer logic can add vehicle-specific conditions.

Do not replace parts based only on the code number; verify cylinder 5 circuit load under command.

Symptoms of P0675

Check-engine light, sometimes with several unrelated codes at once.
Warning lights, a no-start, or intermittent electrical faults.
Communication or module-reset problems on a scan tool.

Common causes of P0675

Low battery voltage, poor grounds, corroded connectors, or blown fuses.
Wiring or network (CAN bus) faults between modules.
A module software/programming issue, or rarely a failed controller.

Useful checks before replacing parts

Measure cylinder 5 glow plug resistance, voltage during command, current draw, battery voltage, coolant temperature, and related glow plug codes.
Inspect cylinder 5 wiring, connector terminals, module output, harness heat damage, corrosion, poor pin fit, and shorts to power or ground.
Compare cylinder 5 measurements with other cylinders during the same commanded glow cycle to separate plug and wiring faults.

Related OBD-II codes

These nearby computer entries can help compare wording and pin down the fault area.