P06B3

Symptoms

• Check Engine Light Is On
• Multiple simultaneous sensor error codes
• Unstable engine operation or emergency mode
• Incorrect or zero readings from group B sensors
• Difficulty starting or stopping the engine

Causes

• Broken power supply wire for group B sensors
• Blown Group B power fuse
• Short circuit with subsequent activation of the ECU protection
• Oxidation or poor contact in the ECU connector
• Malfunction of the internal sensor power supply in the ECU

How to Fix

1. Read all error codes, identify group B sensors according to the car diagram
2. Check the power supply fuse for group B sensors
3. Measure the voltage on the power line with the ignition on
4. Check the wires from the ECU to the group B sensors for a break
5. Repair the break, replace the fuse or faulty sensor
6. Reset error codes and check for restoration of normal operation

Related codes

Error P06B3 by Vehicle Brand