P081B

Symptoms

• Engine won't start
• The starter does not turn off after starting the engine
• Check Engine light comes on
• Problems with the security system (immobilizer)

Causes

• Short circuit in starter cut-off circuit
• Starter relay fault
• Problems with wiring or harness
• Engine control module (ECM) malfunction
• Problems with the security system (immobilizer)

How to Fix

1. Check the starter cut-out circuit for a short circuit.
2. Check the starter relay and its connections
3. Inspect the wiring harness for damage
4. Check engine control module (ECM) operation
5. Diagnose the security system (immobilizer)

Related codes

Error P081B by Vehicle Brand