P112D Cadillac Code - Intake Air Temperature Sensor 3 Circuit High Voltage
Quick Answer
The Intake Air Temperature (IAT) sensor contains a semiconductor device which changes the resistance based on the 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
- P112D Cadillac indicates Intake Air Temperature Sensor 3 Circuit High 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 P112D Cadillac Description
What are the Possible Causes of the DTC P112D Cadillac?
- 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 P112D Cadillac?
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 P112D Cadillac 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 P112D Cadillac Code
1. What are common symptoms of OBDII code P112D in a Cadillac related to the Intake Air Temperature Sensor 3 Circuit High Voltage?
- Common symptoms include rough idling, poor acceleration, decreased fuel efficiency, and potential stalling of the vehicle.
2. What are possible causes of OBDII code P112D in a Cadillac?
- Possible causes include a faulty intake air temperature sensor, damaged wiring or connectors in the sensor circuit, or issues with the engine control module.
3. How can I diagnose the Intake Air Temperature Sensor 3 Circuit High Voltage issue in my Cadillac?
- You can diagnose the issue by using an OBDII scanner to read the fault code, visually inspecting the sensor and its wiring for any visible damage, and testing the sensor's resistance and voltage output.
4. Can I still drive my Cadillac with the P112D code related to the Intake Air Temperature Sensor issue?
- It is not recommended to drive your Cadillac with this code as it can lead to decreased performance, potential engine damage, and increased emissions.
5. How can I repair the Intake Air Temperature Sensor 3 Circuit High Voltage issue in my Cadillac?
- Repairing the issue may involve replacing the faulty intake air temperature sensor, repairing any damaged wiring or connectors, or reprogramming the engine control module.
6. Will resetting the OBDII code P112D in my Cadillac make the issue go away?
- Resetting the code may temporarily clear the warning light, but the underlying issue causing the fault code will still remain until properly diagnosed and repaired.
7. Can a dirty air filter cause the OBDII code P112D in a Cadillac?
- A dirty air filter can indirectly affect the intake air temperature sensor readings, potentially leading to the code P112D, so it's recommended to check and replace the air filter if needed.
8. Is the Intake Air Temperature Sensor 3 Circuit High Voltage issue a common problem in Cadillacs?
- While not extremely common, issues with the intake air temperature sensor and related circuits can occur in Cadillacs, especially in older vehicles or those with high mileage.
9. How much does it typically cost to repair the P112D code related to the Intake Air Temperature Sensor in a Cadillac?
- The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor, excluding diagnostic fees.
10. Can I prevent the OBDII code P112D from reoccurring in my Cadillac?
- Regular maintenance, such as keeping the air filter clean, inspecting sensor connections, and addressing any engine performance issues promptly, can help prevent the code from reoccurring.
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