P0674
Cylinder 4 Glow Plug Circuit Fault
Generic code
Ignition System
High severity
Moderate repair
Free on OBD DashX
Want real-world data on P0674?
See which problems come with P0674, how often it shows up in other vehicles, and how to fix it — step by step.
- Real-world fix data
- How often it happens
- Step-by-step repairs
What P0674 means
- The fault code P0674 indicates that there is an issue with the circuit that controls the glow plug for cylinder 4. This may cause the engine to have difficulty starting or may cause the engine to run poorly.
Possible symptoms
- Difficulty starting the engine, especially in cold weather
- Illuminated check engine light
- Rough idle or stalling
- Reduced engine power or acceleration.
Possible causes
- Failed glow plug
- Faulty wiring or connections in the circuit
- Loose or corroded electrical connections
- Failed engine control module (ECM)
Related parts
- Glow Plug: A glowplug is a heating device that helps to start diesel engines. This car's glow plug has a problem which may cause hesitation while starting the car or the car not starting at all
Possible solutions
- Replace the glow plug
- Check and repair any damaged wiring or connections
- Tighten or clean any loose or corroded electrical connections
- Replace the engine control module (ECM) if necessary
Free on OBD DashX
P0674 on OBD DashX
Real-world causes, how often this code shows up, and the fix — step by step.
Open P0674 No sign-up needed · available in 10 languagesScan your own car
Read and clear fault codes, live data and service resets with the CaRPM app.