P0122 2016 GMC Sierra Code - Throttle Position Sensor 1 Circuit Low Voltage
Quick Answer
The P0122 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates an issue with the Throttle Position Sensor 1 Circuit registering low voltage. Common causes include Faulty throttle position sensor, Damaged wiring or connectors in the TPS circuit, Malfunctioning 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
- P0122 2016 GMC Sierra indicates Throttle Position Sensor 1 Circuit Low Voltage.
- Common causes
- Common causes include Faulty throttle position sensor, Damaged wiring or connectors in the TPS circuit, Malfunctioning 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 P0122 2016 GMC Sierra Description
The P0122 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates an issue with the Throttle Position Sensor 1 Circuit registering low voltage. The throttle position sensor (TPS) is a crucial component of the vehicle's electronic throttle control system, responsible for monitoring the position of the throttle pedal and sending this information to the engine control module (ECM). The ECM uses this data to adjust the air-fuel mixture and ignition timing for optimal engine performance.
Common Causes of P0122 2016 GMC Sierra
- Faulty throttle position sensor
- Damaged wiring or connectors in the TPS circuit
- Malfunctioning ECM
- Issues with the throttle body
- Corrosion or contamination in the TPS circuit
Symptoms of P0122 2016 GMC Sierra
- Hesitation or jerking during acceleration
- Rough idling or stalling
- Reduced engine power
- Poor fuel efficiency
- Illumination of the Check Engine Light
How to Fix P0122 2016 GMC Sierra
- Perform a thorough inspection of the throttle position sensor, wiring, and connectors for any visible damage or corrosion.
- Test the throttle position sensor using a multimeter to check for proper voltage output.
- Replace the throttle position sensor if it is found to be faulty.
- Repair or replace any damaged wiring or connectors in the TPS circuit.
- Clear the DTC and perform a test drive to ensure the issue has been resolved.
Cost to Fix P0122 2016 GMC Sierra
The cost of repairing a Throttle Position Sensor 1 Circuit Low Voltage issue on a 2016 GMC Sierra can vary depending on the specific cause of the problem and the labor rates in your area. Generally, the cost of replacing a throttle position sensor ranges from $100 to $200, while the cost of labor can range from $80 to $150 per hour. Additional costs may apply if wiring or connectors need to be repaired or replaced. It is advisable to consult with a trusted mechanic or auto repair shop to get an accurate estimate for your specific situation.
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Frequently Asked Questions about P0122 2016 GMC Sierra Code
1. What does the OBDII code P0122 mean on a 2016 GMC Sierra?
P0122 indicates that the Throttle Position Sensor (TPS) 1 is reporting a voltage lower than the expected range to the Powertrain Control Module (PCM).
2. What are the common symptoms of code P0122 in a 2016 GMC Sierra?
Symptoms may include poor acceleration, rough idling, engine stalling, reduced engine power mode (limp mode), and an illuminated check engine light.
3. What causes the P0122 code in a 2016 GMC Sierra?
Causes can include a faulty throttle position sensor, damaged or corroded wiring or connectors, a malfunctioning PCM, or issues with the sensor’s ground or voltage supply.
4. Can I drive my 2016 GMC Sierra with the P0122 code?
Driving with P0122 is not recommended, as it can cause unsafe driving conditions due to reduced engine power mode and poor throttle response.
5. How do I diagnose the P0122 code on a 2016 GMC Sierra?
Start by inspecting the TPS and its wiring for damage or corrosion, test the sensor’s voltage output with a multimeter, and check for proper ground and 5-volt reference signals.
6. How is the P0122 code fixed on a 2016 GMC Sierra?
Repairs may involve replacing the throttle position sensor, repairing damaged wiring or connectors, cleaning corroded terminals, or reprogramming the PCM if necessary.
7. How much does it cost to fix a P0122 code on a 2016 GMC Sierra?
The cost can range from $50 to $300 or more, depending on whether the issue is a simple wiring repair or requires replacing the TPS or PCM.
8. Can a dirty throttle body cause the P0122 code on a 2016 GMC Sierra?
Yes, a dirty throttle body can sometimes cause issues with sensor readings, but it’s more likely due to electrical faults or a failing sensor.
9. Will clearing the code fix the P0122 issue on a 2016 GMC Sierra?
Clearing the code will turn off the check engine light temporarily, but the issue will likely return unless the root cause is addressed.
10. Is the P0122 code related to the accelerator pedal position sensor in a 2016 GMC Sierra?
While P0122 specifically involves the throttle position sensor, problems with the accelerator pedal position sensor can sometimes contribute to similar symptoms and should be checked if the issue persists.
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