P06B6

Symptoms

• Check Engine Light Is On
• Reduced engine power and thrust
• Increased fuel consumption
• Possible real detonation (knock) at high loads
• The ECU sets a safe late ignition angle

Causes

• Internal malfunction of the knock sensor processor in the ECU
• Damage to the ECU due to overheating or moisture
• Electrostatic discharge damaging the signal processor
• Software error or ECU firmware failure
• Physical damage to the knock sensor, distorting the signal

How to Fix

1. Read error codes, check for knock sensor codes P0325–P0334
2. Check the functionality of the knock sensors themselves and their wiring
3. If the sensors are working properly, carry out a full diagnostic of the ECU.
4. Try updating the ECU firmware (if there is an update from the manufacturer)
5. If an internal fault is confirmed, repair or replace the ECU
6. Reset codes, perform load test

Related codes

Error P06B6 by Vehicle Brand