P1343
Misfire Cylinder 1 With Fuel Cut-off
Severity
🔴 HighCan you drive?
Do not drive — repair immediately
Approx. repair cost
$6–89 (est.)
Symptoms
- Engine vibration at idle and under load
- Reduced engine power
- Increased fuel consumption
- Check Engine Light Is On
- Unstable engine operation
Causes
- Faulty spark plug in cylinder 1
- Problems with the ignition coil or high voltage wires
- Dirty or faulty fuel injectors
- Low compression in cylinder 1
- Problems with sensors (DPKV, DPRV)
How to Fix
- Check and replace spark plug in cylinder 1
- Diagnose and, if necessary, replace the ignition coil
- Check the condition of the fuel injector and clean or replace it
- Measure the compression in the cylinder
- Check the condition of the crankshaft and camshaft position sensors