P1393
Glow Plug Circuit Low Input Bank 2
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)
Symptoms
- Difficulty starting the engine, especially in cold weather
- Unstable engine operation after starting
- Increased exhaust smoke during cold start
- Check Engine Light on Dashboard
- Reduced engine power
Causes
- Malfunction of one or more glow plugs in the second row
- Open or short circuit in the glow plug circuit
- Poor contact in the glow plug circuit connectors
- Faulty glow plug relay
- Problems with the engine control unit
How to Fix
- Check the resistance of the second row glow plugs
- Inspect the wiring and connectors of the glow plug circuit for damage.
- Check the operation of the glow plug relay
- If necessary, replace faulty glow plugs
- Check the power and ground of the glow plug circuit