P0138 – Chevrolet Corvette C5 DTC

Chevrolet Corvette C5 DTC P0138 – HO2S Circuit High Voltage Bank 1 Sensor 2

DTC P0138 meaning on Chevrolet Corvette C5

DTC P0138 refers to a fault in the HO2S (Heated Oxygen Sensor) circuit for Bank 1 Sensor 2 in a Chevrolet Corvette C5. This code indicates that the oxygen sensor downstream of the catalytic converter is detecting a high voltage condition.

Chevrolet Corvette C5 DTC P0138 symptoms

Symptoms of DTC P0138 in a Chevrolet Corvette C5 may include:

• Check Engine Light illuminated on the dashboard
• Decreased fuel efficiency
• Engine running rough or misfiring
• Increased emissions

Chevrolet Corvette C5 DTC P0138 causes

Common causes of DTC P0138 in a Chevrolet Corvette C5 include:

• Faulty oxygen sensor (Bank 1 Sensor 2)
• Wiring or connector issues in the oxygen sensor circuit
• Exhaust leaks near the sensor
• Engine running rich

Chevrolet Corvette C5 DTC P0138 seriousness

DTC P0138 should not be ignored as it can lead to decreased fuel efficiency and increased emissions. Additionally, prolonged driving with this fault may cause damage to the catalytic converter.

How to diagnose DTC P0138 on Chevrolet Corvette C5

To diagnose DTC P0138 on a Chevrolet Corvette C5, you can:

1. Use an OBD-II scanner to retrieve the fault code
2. Inspect the wiring and connectors of the Bank 1 Sensor 2 oxygen sensor
3. Check for exhaust leaks near the sensor
4. Perform a visual inspection of the sensor for any physical damage

How to fix DTC P0138 on Chevrolet Corvette C5

To fix DTC P0138 on a Chevrolet Corvette C5, you may need to:

1. Replace the Bank 1 Sensor 2 oxygen sensor
2. Repair any damaged wiring or connectors in the sensor circuit
3. Fix any exhaust leaks near the sensor
4. Address any issues causing the engine to run rich

How to erase DTC P0138 on Chevrolet Corvette C5

To erase DTC P0138 on a Chevrolet Corvette C5, you can:

1. Use an OBD-II scanner to clear the fault code
2. After fixing the underlying issue, drive the vehicle to allow the system to retest and verify the repair
3. If the fault does not return, the DTC P0138 should be erased from the system

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