P122C 2017 GMC Sierra Code - Intake Air Flow Valve Control Circuit Shorted
Quick Answer
The P122C diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a problem with the Intake Air Flow Valve Control Circuit being shorted. Common causes include Short circuit in the wiring harness, Malfunctioning intake air flow valve control module, Faulty 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 2017 GMC Sierra indicates Intake Air Flow Valve Control Circuit Shorted.
- Common causes
- Common causes include Short circuit in the wiring harness, Malfunctioning intake air flow valve control module, Faulty 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 2017 GMC Sierra Description
The P122C diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a problem with the Intake Air Flow Valve Control Circuit being shorted. This code typically points to an issue with the electrical circuit that controls the intake air flow valve, which plays a crucial role in regulating the amount of air entering the engine for combustion. The intake air flow valve is responsible for ensuring the proper air-to-fuel ratio, which is essential for the engine to operate efficiently.
Common Causes of P122C 2017 GMC Sierra
- Short circuit in the wiring harness
- Malfunctioning intake air flow valve control module
- Faulty engine control module (ECM)
- Issues with related sensors (e.g., throttle position sensor)
Symptoms of P122C 2017 GMC Sierra
- Rough idling or stalling
- Decreased fuel efficiency
- Loss of power
- Hesitation during acceleration
- Illumination of the check engine light
How to Fix P122C 2017 GMC Sierra
- Begin by conducting a thorough visual inspection of the wiring harness and connectors associated with the intake air flow valve control circuit. Look for any visible damage or signs of wear.
- Test the intake air flow valve control module using a multimeter to determine if it is functioning properly. Replace the module if necessary.
- Check and test the engine control module (ECM) and related sensors for any faults or malfunctions. Replace or repair as needed.
- Clear the DTC from the vehicle's ECM memory using a diagnostic scan tool after completing the repairs.
- Perform a test drive to ensure that the issue has been resolved and that the vehicle is operating smoothly.
Cost to Fix P122C 2017 GMC Sierra
The typical repair costs for addressing a P122C code on a 2017 GMC Sierra can vary depending on the specific cause of the issue and the extent of the repairs needed. Typically, the cost of parts for this repair can range from $100 to $300, with labor costs adding an additional $100 to $200. However, it's important to note that labor rates at auto repair shops can vary significantly based on factors such as location, the vehicle's make and model, and the type of engine. It's recommended to obtain quotes from local repair shops for a more accurate estimate of the total repair costs.
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Frequently Asked Questions about P122C 2017 GMC Sierra Code
1. What does OBDII code P122C mean on a 2017 GMC Sierra?
P122C indicates a problem with the Intake Air Flow Valve Control Circuit, specifically that it is shorted.
2. What are the symptoms of a P122C code in a 2017 GMC Sierra?
Common symptoms include poor engine performance, reduced power, rough idling, and possibly the illumination of the Check Engine Light.
3. What causes the P122C code to appear?
This code is typically caused by a short in the wiring or connectors of the intake air flow valve circuit, a malfunctioning intake air flow valve, or a faulty engine control module (ECM).
4. Can I drive my 2017 GMC Sierra with a P122C code?
Driving with this code is not recommended as it can lead to reduced performance and potential damage to the engine or other components.
5. How can I diagnose a P122C code?
Diagnose by inspecting the intake air flow valve wiring and connectors for damage or shorts, testing the valve for proper operation, and using a multimeter to check the circuit.
6. How do I fix the P122C code on my GMC Sierra?
Repairs may include replacing damaged wiring, repairing or replacing the intake air flow valve, or reprogramming or replacing the ECM if necessary.
7. How much does it cost to repair a P122C code on a 2017 GMC Sierra?
Costs vary, but repairing damaged wiring or replacing the intake air flow valve can range from $100 to $500 depending on parts and labor.
8. Can a dirty air filter cause a P122C code?
No, a dirty air filter is unlikely to cause this specific code, but it can contribute to other airflow-related issues.
9. Will clearing the code fix the problem permanently?
Clearing the code without addressing the underlying issue will only temporarily turn off the Check Engine Light. The code will likely return.
10. What tools are needed to troubleshoot a P122C code?
Tools needed include an OBDII scanner, a multimeter for testing electrical circuits, and potentially repair manuals for wiring diagrams.
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