P0138
O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)
Affects: Tiggo 4, Tiggo 7
Common Causes
- •Faulty rear O2 sensor
- •Wiring short
- •PCM issue
How to Fix
- 1Test rear O2 sensor
- 2Check wiring
- 3Replace sensor if faulty
Estimated Repair Cost (Australia)
$150 - $500
AUD
*Cost varies by model, location, and service provider. Get multiple quotes.
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