P06B2

Symptoms

• Check Engine Light Is On
• Inflated readings from group A sensors
• Many related error codes
• Unstable engine operation or emergency mode
• Possible physical damage to sensors due to prolonged high voltage

Causes

• Break in the load part of the sensor power supply circuit (all sensors are disabled)
• Shorting the sensor power line to a wire with a higher voltage
• Malfunction of the sensor power supply stabilizer in the ECU
• Damage to the wiring harness with contact with the body power circuit
• Non-original sensor that disrupts the normal operation of the circuit

How to Fix

1. Read error codes, identify group A sensors
2. Measure the voltage on the power line (if P06B2 is above normal)
3. Disconnect all sensors in group A and measure the voltage again
4. If the voltage has returned to normal, connect the sensors in series to find the faulty one.
5. If the voltage remains high with all sensors disconnected, the problem is in the ECU or the wiring to it.
6. Fix the malfunction, reset the codes, check the result

Related codes

Error P06B2 by Vehicle Brand