Fault Code P0669
Code meaning, symptoms, possible causes, part number, and estimated cost.
P0669
ECM/PCM Internal Temperature Sensor 'B' Circuit High
This code indicates a higher than normal voltage in the ECM/PCM's internal temperature sensor 'B' circuit. High voltage can cause incorrect temperature readings and affect engine performance.
Part Details
Part Name
Internal Temperature Sensor 'B'
Reference P/N (OEM)
N/A
General part number for this fault code — not necessarily for your specific vehicle
Estimated Cost
₪400 - ₪1200
Engine Location
Inside ECM/PCM
Symptoms
- Check Engine Light on
- Engine overheating
- Hard starting
- Reduced engine power
Possible Causes
- 1Open wiring in the sensor circuit
- 2Wiring shorted to voltage
- 3Faulty internal temperature sensor
- 4PCM/ECM malfunction
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