P013B

Symptoms

• Unstable idle
• Increased fuel consumption
• Reduced engine power
• Check Engine Light Is On

Causes

• Oxygen sensor wear
• Sensor contamination (oil, antifreeze)
• Damage to the sensor wiring harness
• Short circuit or open circuit in the sensor circuit
• Exhaust system problems (leaks)
• Malfunction of the catalytic converter

How to Fix

1. Check the condition of the sensor and its connector
2. Check wiring integrity
3. Clean the sensor from dirt (if possible)
4. Replace the oxygen sensor if necessary
5. Check the exhaust system for leaks

Related codes

Error P013B by Vehicle Brand