P1312
Ignition Coil Knock Detection Cylinder 1 & 2
Severity
🔴 HighCan you drive?
Do not drive — repair immediately
Approx. repair cost
$17–89 (est.)
Symptoms
- Engine knocking or ringing
- Power Loss
- Unstable engine operation
- Increased fuel consumption
- Check Engine light comes on
Causes
- Poor quality fuel with low octane number
- Faulty spark plugs
- Problems with ignition coils
- Faulty knock sensor
- Mechanical engine problems (for example, carbon deposits in the combustion chamber)
How to Fix
- Check fuel quality and replace if necessary
- Check and replace spark plugs
- Check ignition coils
- Check the knock sensor and its wiring
- Diagnose the engine for mechanical problems