Chevrolet Corvette C5 DTC P0140 – HO2S Circuit Insufficient Activity Bank 1 Sensor 2
DTC P0140 meaning on Chevrolet Corvette C5
DTC P0140 on a Chevrolet Corvette C5 indicates an issue with the HO2S (Heated Oxygen Sensor) Circuit for Bank 1 Sensor 2. This code specifically points to insufficient activity from the oxygen sensor located downstream of the catalytic converter on the side of the engine with cylinder 1.
Chevrolet Corvette C5 DTC P0140 symptoms
- Check Engine Light (MIL) illuminated on the dashboard
- Decreased fuel efficiency
- Engine may run rough or hesitate
- Increased emissions
Chevrolet Corvette C5 DTC P0140 causes
- Faulty Bank 1 Sensor 2 oxygen sensor
- Wiring or connector issues in the oxygen sensor circuit
- Exhaust leaks near the sensor
- Issues with the catalytic converter
Chevrolet Corvette C5 DTC P0140 seriousness
The DTC P0140 code should not be ignored as it can lead to decreased fuel efficiency and increased emissions. While the vehicle may still be operable, it is recommended to address this issue promptly to prevent further damage to the engine or emissions system.
How to diagnose DTC P0140 on Chevrolet Corvette C5
- Use an OBD-II scanner to retrieve the specific DTC code
- Inspect the wiring and connectors related to Bank 1 Sensor 2
- Check for exhaust leaks near the sensor
- Test the oxygen sensor’s functionality using a multimeter
How to fix DTC P0140 on Chevrolet Corvette C5
- Replace the Bank 1 Sensor 2 oxygen sensor
- Repair any damaged wiring or connectors in the sensor circuit
- Fix any exhaust leaks near the sensor
- If necessary, replace the catalytic converter
How to erase DTC P0140 on Chevrolet Corvette C5
- After addressing the root cause of the issue, use an OBD-II scanner to clear the DTC P0140 code
- Ensure that the repair has been successful by monitoring the vehicle’s performance and checking for any recurring codes
Recommended tools for Chevrolet Corvette C5 diagnostics
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