P2BB9

Symptoms

• Unstable engine operation at idle
• Increased fuel consumption
• Engine overheating
• Check Engine Light Illuminates
• Reduced engine power

Causes

• Open circuit in coolant temperature sensor No. 6
• Short circuit to power
• Malfunction of coolant temperature sensor No. 6
• Connector problems or contact corrosion
• Malfunction of the engine control unit (rare)

How to Fix

1. Check the integrity of the sensor circuit (open/short circuit)
2. Inspect the connectors and contacts of the sensor for damage
3. Check the resistance of the temperature sensor at different temperatures
4. Replace the coolant temperature sensor if necessary
5. Reset the error code and check if it appears again

Related codes

Error P2BB9 by Vehicle Brand