P0671 OBD-II: Cylinder 1 Glow Plug Circuit/Open
P0671 Severity
Should you fix P0671 yourself?
Identifying an OBD code is just the start of a complete diagnostic routine. Most trouble codes are caused by a sensor reporting a value that is out of range. Just replacing a sensor may not fix underlying issues. Be sure to understand the code, the part or system in your car that the code refers to, and the risks of delaying professional repair.
Proper diagnosis will save you time and money on unnecessary repairs.
Urgent codes indicate immediate action is necessary. These are urgent and significant malfunctions that can cause severe damage to the vehicle or harm the driver and passengers.
What causes OBD-II fault code P0671?
The Glow Plug is used on diesel engines to preheat the cylinder before the engine is started. If the engine control module (PCM) detects the glow plug for cylinder one is not operating properly, the PCM will set code P0671.
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OBD II Fault Code
- OBD II P0671
OBD-II Code Hard or no start in cold weather is defined as a Cylinder 1 Glow Plug Circuit/Open
The Glow Plug is used on diesel engines to preheat the cylinder before the engine is started. If the engine control module (PCM) detects the glow plug for cylinder one is not operating properly, the PCM will set code P0671.
Hard or no start in cold weather Symptoms
- Engine may not start
- Hard or no start in cold weather
Common Problems That Trigger the P0671 Code
- Glow plug control module failure
- Glow plug failure
- Glow plug wiring harness failure
Common Repairs Needed for the P0671 Code
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