P112C GMC Code - Intake Air Temperature Sensor 3 Circuit Low Voltage
Quick Answer
The P112C GMC code indicates a problem with the Intake Air Temperature Sensor 3 Circuit registering a low voltage. Common causes include Faulty Intake Air Temperature Sensor, Damaged wiring or connectors related to the sensor, Corrosion or contamination in the sensor's connections. 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
- P112C GMC indicates Intake Air Temperature Sensor 3 Circuit Low Voltage.
- Common causes
- Common causes include Faulty Intake Air Temperature Sensor, Damaged wiring or connectors related to the sensor, Corrosion or contamination in the sensor's connections.
- 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 P112C GMC Description
The P112C GMC code indicates a problem with the Intake Air Temperature Sensor 3 Circuit registering a low voltage. The Intake Air Temperature Sensor is a crucial component of the vehicle's engine management system, as it helps monitor the temperature of the air entering the engine. This information is used by the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion efficiency.
Common Causes of P112C GMC
- Faulty Intake Air Temperature Sensor
- Damaged wiring or connectors related to the sensor
- Corrosion or contamination in the sensor's connections
- ECM malfunction affecting the sensor readings
- Poor electrical connection
Symptoms of P112C GMC
- Check Engine Light illuminated on the dashboard
- Decreased fuel efficiency
- Rough idling or stalling
- Reduced engine performance
- Difficulty starting the engine
How to Fix P112C GMC
- Begin by diagnosing the specific cause of the low voltage issue by testing the Intake Air Temperature Sensor and its connections.
- If the sensor is found to be faulty, replace it with a new OEM sensor to ensure accurate readings.
- Check and repair any damaged wiring or connectors related to the sensor to ensure proper connectivity.
- Clear the diagnostic trouble codes from the ECM and reset the system to see if the issue has been resolved.
- Test drive the vehicle to confirm that the Check Engine Light does not reappear and that the symptoms associated with the code have been resolved.
Cost to Fix P112C GMC
The typical repair costs for addressing the Intake Air Temperature Sensor 3 Circuit Low Voltage issue can vary depending on the specific cause of the problem and the vehicle's make and model. In general, replacing the sensor itself can cost between $50 to $150, while labor costs may range from $80 to $150 per hour. Overall, the total repair costs for this issue could range from $150 to $300, excluding any additional diagnostic fees or parts that may be necessary. It is advisable to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate based on your vehicle's specific needs.
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Frequently Asked Questions about P112C GMC Code
1. What are common symptoms of OBDII code P112C GMC (Intake Air Temperature Sensor 3 Circuit Low Voltage)?
The common symptoms include poor engine performance, reduced fuel efficiency, and the illumination of the Check Engine Light.
2. What can cause the OBDII code P112C GMC to trigger?
The code P112C GMC typically triggers due to a faulty intake air temperature sensor, damaged wiring or connectors, or issues with the sensor circuit.
3. How can I diagnose the cause of OBDII code P112C GMC?
Diagnosing the code involves checking the intake air temperature sensor's resistance, inspecting the wiring and connectors for damage, and testing the sensor circuit for continuity.
4. Can a dirty air filter cause the OBDII code P112C GMC to appear?
A dirty air filter is unlikely to directly cause the code P112C GMC. However, a clogged air filter can indirectly affect the intake air temperature sensor's readings, leading to potential issues.
5. What are some repair tips for fixing OBDII code P112C GMC?
Repair tips include replacing the intake air temperature sensor if faulty, repairing damaged wiring or connectors, clearing the code with an OBDII scanner, and conducting a thorough inspection of the intake system.
6. How urgent is it to address OBDII code P112C GMC?
While the vehicle may still be driveable with this code, it is important to address it promptly to prevent further damage to the engine or emissions system and restore optimal performance.
7. Can I reset the OBDII code P112C GMC without fixing the underlying issue?
Resetting the code without fixing the underlying issue will only temporarily turn off the Check Engine Light. The problem will likely resurface if the root cause is not addressed.
8. Is it safe to continue driving with OBDII code P112C GMC present?
It is generally safe to drive with this code present, but it is recommended to address it as soon as possible to avoid potential long-term damage or performance issues.
9. Will disconnecting the battery reset OBDII code P112C GMC?
Disconnecting the battery may reset the code temporarily, but it is not a guaranteed fix. The underlying issue causing the code will need to be resolved to prevent it from reappearing.
10. How much does it typically cost to repair OBDII code P112C GMC at a mechanic?
The cost of repairing this code can vary depending on the specific issue, but it may range from $100 to $300 for parts and labor at a mechanic.
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