P1112 Chevrolet Code - Intake Air Temperature Sensor Circuit Intermittent Low Voltage
Quick Answer
The Intake Air Temperature (IAT) sensor contains a semiconductor device which changes resistance based on temperature (a thermistor). Common causes include Faulty Intake Air Temperature Sensor, Intake Air Temperature Sensor harness is open or shorted, Intake Air Temperature Sensor circuit poor electrical connection. 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
- P1112 Chevrolet indicates Intake Air Temperature Sensor Circuit Intermittent Low Voltage.
- Common causes
- Common causes include Faulty Intake Air Temperature Sensor, Intake Air Temperature Sensor harness is open or shorted, Intake Air Temperature Sensor circuit poor electrical connection.
- 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.
Code P1112 Chevrolet Description
When the intake air is cold, the sensor (thermistor) resistance is high, and the PCMs signal voltage is only pulled down a small amount through the sensor to ground. The PCM senses a high signal voltage (low temperature). When the intake air is warm, the sensor resistance is low, and the signal voltage is pulled down a greater amount. This causes the PCM to sense a low signal voltage (high temperature).
What are the Possible Causes of the DTC P1112 Chevrolet?
- Faulty Intake Air Temperature Sensor
- Intake Air Temperature Sensor harness is open or shorted
- Intake Air Temperature Sensor circuit poor electrical connection
How to Fix the DTC P1112 Chevrolet?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1112 Chevrolet code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P1112 Chevrolet Code
1. What are the common symptoms of OBDII code P1112 in a Chevrolet related to the Intake Air Temperature Sensor Circuit Intermittent Low Voltage?
Symptoms may include rough idling, decreased engine performance, stalling, and potential issues with fuel efficiency.
2. What are the possible causes of the Intake Air Temperature Sensor Circuit Intermittent Low Voltage code P1112 in a Chevrolet?
Potential causes include a faulty intake air temperature sensor, damaged wiring or connectors, or a problem with the sensor circuit itself.
3. How can I diagnose the cause of OBDII code P1112 in my Chevrolet?
Diagnosis typically involves using a scan tool to read the code, checking the sensor's wiring and connectors for damage, and testing the sensor's resistance or voltage output.
4. Can a dirty air filter trigger the P1112 code in a Chevrolet?
Yes, a dirty air filter can disrupt the air intake system and impact the intake air temperature sensor readings, potentially leading to the P1112 code.
5. Is it safe to continue driving with the P1112 code present in a Chevrolet?
It is not recommended to drive with the P1112 code active, as it can cause engine performance issues and potentially lead to further damage if left unresolved.
6. Will resetting the OBDII code P1112 in a Chevrolet fix the issue temporarily?
Resetting the code may temporarily clear the check engine light, but if the underlying issue causing the code is not addressed, it is likely to reoccur.
7. Can I replace the intake air temperature sensor myself to resolve the P1112 code in my Chevrolet?
Replacing the sensor yourself is possible, but it is recommended to have the proper tools and knowledge to ensure the replacement is done correctly.
8. Are there any simple DIY repair tips to address the P1112 code in a Chevrolet?
Check the sensor's wiring and connectors for any visible damage or corrosion, and ensure the sensor is securely mounted in place before considering a replacement.
9. How much does it typically cost to repair the Intake Air Temperature Sensor Circuit Intermittent Low Voltage issue causing the P1112 code in a Chevrolet?
The cost can vary depending on the cause of the issue, but replacing the intake air temperature sensor or repairing damaged wiring can range from $50 to $200, including parts and labor.
10. Will a P1112 code in a Chevrolet cause the vehicle to fail an emissions test?
Yes, the P1112 code typically indicates a problem with the intake air temperature sensor circuit, which can affect emissions control systems and cause the vehicle to fail an emissions test.
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