The engine control unit measures current draw across all ten glow plugs during pre-heating. If the current draw on cylinder 10 is higher or lower than the others, this code triggers. A low draw indicates the heating element has degraded. A high draw suggests a short in the plug's internal coil. Always verify that replacement plugs match the exact specs of the original equipment.
Mechanic Glossary
10 Glow Plug Incorrect
An OBD2 code indicating the current draw from the cylinder 10 glow plug is outside expected limits.
Frequently Asked Questions
The engine computer detected abnormal current draw from cylinder 10 glow plug during the pre-heat cycle.
It is not recommended. Different brands have slightly different resistance values. The computer will detect this mismatch and set an incorrect code.
Yes. Once the computer detects the correct current draw during a few start cycles, the code will clear.