Fault codes › P0678
P0678
Cylinder 8 Glow Plug Circuit Fault
Generic code
Ignition System
High severity
Moderate repair
Free on OBD DashX
Want real-world data on P0678?
See which problems come with P0678, 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
See P0678 on OBD DashX
No sign-up needed · available in 10 languages
iWhat P0678 means
- The fault code P0678 indicates that there is an issue with the circuit that controls the glow plug for cylinder 8. This may cause difficulty in starting the engine, especially in cold weather.
!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 for cylinder 8
- Faulty wiring or connections in the circuit
- Loose or corroded electrical connections
- Failed glow plug control module
⚙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 for cylinder 8
- Check and repair any damaged wiring or connections
- Tighten or clean any loose or corroded electrical connections
- Replace the glow plug control module if necessary