P122C 2018 Chevrolet Silverado Code - Intake Air Flow Valve Control Circuit Shorted
Quick Answer
The P122C diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado refers to the Intake Air Flow Valve Control Circuit being shorted. Common causes include Damaged wiring or connectors in the intake air flow valve control circuit, Faulty intake air flow valve, Malfunctioning engine control module (ECM). Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P122C 2018 Chevrolet Silverado indicates Intake Air Flow Valve Control Circuit Shorted.
- Common causes
- Common causes include Damaged wiring or connectors in the intake air flow valve control circuit, Faulty intake air flow valve, Malfunctioning engine control module (ECM).
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P122C 2018 Chevrolet Silverado Description
The P122C diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado refers to the Intake Air Flow Valve Control Circuit being shorted. This code indicates that there is a malfunction in the circuit that controls the intake air flow valve, which can have a significant impact on the vehicle's performance. The intake air flow valve is responsible for regulating the amount of air that enters the engine, which is crucial for the combustion process and overall engine efficiency.
Common Causes of P122C 2018 Chevrolet Silverado
- Damaged wiring or connectors in the intake air flow valve control circuit
- Faulty intake air flow valve
- Malfunctioning engine control module (ECM)
- Corrosion or moisture in the circuit
- Electrical short circuit
Symptoms of P122C 2018 Chevrolet Silverado
- Reduced engine power
- Poor fuel efficiency
- Rough idling or stalling
- Difficulty starting the engine
- Illumination of the check engine light
How to Fix P122C 2018 Chevrolet Silverado
- Begin by conducting a thorough inspection of the intake air flow valve control circuit, checking for any visible damage to wiring or connectors.
- Test the intake air flow valve to determine if it is functioning correctly. Replace the valve if necessary.
- Use a multimeter to test the continuity of the circuit and identify any short circuits or faults.
- Inspect the engine control module (ECM) for any signs of damage or malfunction. Replace or reprogram the ECM as needed.
- Clear the DTC with a diagnostic scan tool and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P122C 2018 Chevrolet Silverado
The typical repair costs for addressing a shorted intake air flow valve control circuit can vary depending on the extent of the damage and the specific components that need to be replaced. In general, the parts required for this repair, such as a new intake air flow valve or wiring harness, can range from $100 to $500. Labor costs at auto repair shops typically range from $80 to $150 per hour, with the total repair bill potentially amounting to several hundred dollars. It is advisable to check with local repair shops for a more accurate estimate based on your location and vehicle specifics.
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Frequently Asked Questions about P122C 2018 Chevrolet Silverado Code
1. What does the OBDII code P122C mean on a 2018 Chevrolet Silverado?
P122C indicates a short circuit in the Intake Air Flow Valve Control Circuit, which manages airflow into the engine for optimal performance.
2. What are common symptoms of code P122C in a 2018 Chevy Silverado?
Common symptoms include reduced engine performance, poor fuel efficiency, rough idling, and a potential check engine light.
3. What causes the P122C code to appear on a Chevrolet Silverado?
The code is often caused by a short in the wiring or connectors for the intake air flow valve, a faulty intake air flow valve, or issues with the engine control module (ECM).
4. Can I drive my 2018 Silverado with a P122C code?
Driving with this code is not recommended as it can reduce engine performance and potentially cause long-term damage if not addressed.
5. How do I fix the P122C code on a 2018 Chevrolet Silverado?
Start by inspecting and repairing any damaged wiring or connectors for the intake air flow valve. If the issue persists, the valve or ECM may need to be replaced.
6. How much does it cost to repair a P122C code on a 2018 Chevy Silverado?
Repair costs can vary, but replacing the intake air flow valve typically ranges from $200 to $500, while addressing wiring or ECM issues may cost more.
7. What tools are needed to diagnose a P122C code?
A diagnostic scan tool, multimeter, and possibly wiring diagrams for the intake air flow valve circuit are needed.
8. Can a dirty air filter cause a P122C code?
No, a dirty air filter is unlikely to cause this specific code. P122C is related to an electrical issue in the intake air flow valve circuit, not airflow restriction.
9. Will clearing the code fix the P122C issue on my Silverado?
Clearing the code may temporarily turn off the check engine light, but the underlying issue must be repaired to prevent the code from returning.
10. Is the P122C code covered under warranty for a 2018 Chevrolet Silverado?
It may be covered if the vehicle is still under the powertrain or emissions warranty. Check with your dealership to confirm coverage.
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