P122B 2015 Chevrolet Silverado Code - Intake Air Flow Valve Control Supply Voltage Circuit
Quick Answer
The P122B diagnostic trouble code (DTC) for a 2015 Chevrolet Silverado refers to an issue with the Intake Air Flow Valve Control Supply Voltage Circuit. Common causes include Damaged wiring or connectors in the intake air flow valve control circuit, Faulty intake air flow valve, Defective 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
- P122B 2015 Chevrolet Silverado indicates Intake Air Flow Valve Control Supply Voltage Circuit.
- Common causes
- Common causes include Damaged wiring or connectors in the intake air flow valve control circuit, Faulty intake air flow valve, Defective 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 P122B 2015 Chevrolet Silverado Description
The P122B diagnostic trouble code (DTC) for a 2015 Chevrolet Silverado refers to an issue with the Intake Air Flow Valve Control Supply Voltage Circuit. This code indicates that there is a problem with the electrical circuit that supplies voltage to the intake air flow valve control system. The intake air flow valve is responsible for regulating the amount of air entering the engine, which is crucial for proper combustion and engine performance.
Common Causes of P122B 2015 Chevrolet Silverado
- Damaged wiring or connectors in the intake air flow valve control circuit
- Faulty intake air flow valve
- Defective engine control module (ECM)
- Power supply issues to the circuit
Symptoms of P122B 2015 Chevrolet Silverado
- Lack of power
- Rough idling
- Stalling
- Hesitation during acceleration
- Check Engine Light illuminated
How to Fix P122B 2015 Chevrolet Silverado
- Begin by performing a thorough inspection of the intake air flow valve control circuit, checking for any damaged wiring or connectors. Repair or replace any faulty components as needed.
- Test the intake air flow valve to ensure it is functioning correctly. Replace the valve if it is found to be faulty.
- Check the engine control module (ECM) for any signs of damage or malfunction. If necessary, reprogram or replace the ECM.
- Verify the power supply to the circuit and address any issues with voltage supply. Ensure all connections are secure and free of corrosion.
Cost to Fix P122B 2015 Chevrolet Silverado
The typical repair costs for addressing a P122B code can vary depending on the specific cause of the issue. In general, the cost of parts for this repair can range from $100 to $300, while labor costs can range from $100 to $200. However, it's important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and the extent of the repairs needed. Additionally, diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.
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Frequently Asked Questions about P122B 2015 Chevrolet Silverado Code
1. What does the OBDII code P122B mean on a 2015 Chevrolet Silverado?
P122B refers to an issue with the "Intake Air Flow Valve Control Supply Voltage Circuit," indicating a problem with the electrical circuit responsible for the intake airflow valve.
2. What are the common symptoms of a P122B code?
Symptoms may include reduced engine performance, poor throttle response, the Check Engine Light illuminated, and potential stalling or hesitation during acceleration.
3. What causes the P122B code on a 2015 Chevrolet Silverado?
Common causes include a faulty intake airflow valve, damaged wiring or connectors in the supply voltage circuit, or issues with the engine control module (ECM).
4. Can a dirty throttle body cause a P122B code?
A dirty throttle body itself may not directly cause P122B, but related airflow restrictions or sensor malfunctions can contribute to the issue.
5. How can I diagnose the P122B code on my Silverado?
Start by inspecting the intake airflow valve, wiring, and connectors for damage or corrosion. Use a multimeter to check for proper voltage in the circuit and scan for related codes.
6. Is the P122B code serious, and can I keep driving the truck?
While the truck may still run, the P122B code can lead to reduced performance and potential long-term engine damage. It’s best to address the issue promptly.
7. How do I fix the P122B code on a 2015 Chevrolet Silverado?
Repairs may involve replacing the intake airflow valve, repairing damaged wiring or connectors, or reprogramming the ECM if necessary.
8. Can a weak battery cause the P122B code?
Yes, insufficient voltage from a weak or failing battery can affect the intake airflow valve control circuit, potentially triggering the P122B code.
9. Do I need to replace the ECM if I get a P122B code?
Replacing the ECM is rarely the first step. Only consider ECM replacement after ruling out all other causes, such as wiring issues or a faulty valve.
10. How much does it cost to repair a P122B code on a 2015 Silverado?
Costs can vary. Replacing the intake airflow valve may cost $300–$600, while wiring repairs are typically less expensive. ECM replacement, if needed, can cost $800–$1,200.
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