P0112 Cadillac Code - Intake Air Temperature Sensor Circuit Low Voltage
Quick Answer
The intake air temperature (IAT) sensor 1 is a variable resistor that measures the temperature of the air in the sensor bore. Common causes include Dirty air filter, Faulty Intake Air Temperature (IAT) Sensor, Intake Air Temperature Sensor harness is open or shorted. 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
- P0112 Cadillac indicates Intake Air Temperature Sensor Circuit Low Voltage.
- Common causes
- Common causes include Dirty air filter, Faulty Intake Air Temperature (IAT) Sensor, Intake Air Temperature Sensor harness is open or shorted.
- 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 P0112 Cadillac Description
What are the Possible Causes of the DTC P0112 Cadillac?
- Dirty air filter
- Faulty Intake Air Temperature (IAT) Sensor
- Intake Air Temperature Sensor harness is open or shorted
- Intake Air Temperature Sensor circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0112 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 P0112 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 P0112 Cadillac Code
1. What does the OBDII code P0112 mean on a Cadillac?
P0112 indicates that the Intake Air Temperature (IAT) sensor circuit is reporting a low voltage signal to the Engine Control Module (ECM), suggesting the sensor is detecting an unusually low air temperature.
2. What are common symptoms of the P0112 code on a Cadillac?
Symptoms may include poor fuel economy, rough idling, reduced engine performance, difficulty starting the vehicle, and the Check Engine Light being illuminated.
3. What causes the P0112 code on a Cadillac?
Common causes include a faulty IAT sensor, damaged or corroded wiring, a short circuit, a loose connection, or issues with the ECM.
4. Can I drive my Cadillac with the P0112 code active?
While you may still be able to drive, operating the vehicle with this code can result in poor performance and could potentially lead to further engine issues if not addressed promptly.
5. How do I diagnose the P0112 code on a Cadillac?
Diagnosis typically involves using an OBDII scanner to confirm the code, visually inspecting the IAT sensor and wiring, testing the sensor's resistance with a multimeter, and checking for proper voltage at the sensor connector.
6. How do I fix the P0112 code on my Cadillac?
Possible fixes include replacing the IAT sensor, repairing damaged wiring or connectors, cleaning corroded connections, or, in rare cases, replacing the ECM.
7. Where is the IAT sensor located on a Cadillac?
The IAT sensor is usually located near the air intake system, often inside or attached to the air filter housing or intake manifold.
8. Can a dirty air filter cause the P0112 code on a Cadillac?
A dirty air filter itself is unlikely to trigger the code, but it can contribute to reduced airflow and potentially affect the accuracy of the IAT sensor readings.
9. How much does it cost to fix the P0112 code on a Cadillac?
Repairs can range from $50 to $200, depending on whether the issue is a simple wiring repair or requires replacing the IAT sensor.
10. Will clearing the P0112 code fix the problem on my Cadillac?
Clearing the code will turn off the Check Engine Light temporarily, but if the underlying issue isn’t fixed, the code will return.
Discuss the causes and fixes for P0112 Cadillac OBDII Code
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