U3031
Ignition Output Off
U3031 is an OBD-II diagnostic trouble code meaning: Ignition Output Off. Common causes: ignition module malfunction, open or short circuit in the ignition circuit. Estimated repair cost: $17–89.
Symptoms
- Engine won't start
- Unstable engine operation
- Power Loss
- Misfires
- Check Engine light comes on
Causes
- Ignition module malfunction
- Open or short circuit in the ignition circuit
- Problems with power supply to the ignition module
- Malfunction of the crankshaft position sensor
- ECU problems
How to Fix
- Check the integrity of the ignition circuit
- Check the power supply to the ignition module
- Check the operation of the crankshaft position sensor
- Check and, if necessary, replace the ignition module
- Check ECU for errors
Related codes
Error U3031 by Vehicle Brand
FAQ
What does the U3031 code mean?
U3031 is an OBD-II diagnostic trouble code that indicates: Ignition Output Off
What causes a U3031 error code?
The most common causes of U3031 include: Ignition module malfunction; Open or short circuit in the ignition circuit; Problems with power supply to the ignition module; Malfunction of the crankshaft position sensor.
How do I fix a U3031 diagnostic trouble code?
To fix U3031: Check the integrity of the ignition circuit. Check the power supply to the ignition module. Check the operation of the crankshaft position sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U3031?
Do not drive — repair immediately
How much does it cost to fix U3031?
The estimated repair cost for U3031 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat