P1112 Subaru Code - Atmospheric pressure sensor range/performance problem
Quick Answer
The Intake Air Temperature (IAT) sensor is built into mass air flow sensor or in some vehicles mounted to the air filter duct housing. 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 Subaru indicates Atmospheric pressure sensor range/performance problem.
- 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 Subaru Description
What are the Possible Causes of the DTC P1112 Subaru?
- 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 Subaru?
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 Subaru 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 Subaru Code
1. What does the OBDII code P1112 mean on a Subaru?
P1112 indicates an "Atmospheric Pressure Sensor Range/Performance Problem," meaning the vehicle's ECU is detecting an issue with the atmospheric pressure sensor's readings, which may be outside the expected range.
2. What are the common symptoms of a P1112 code on a Subaru?
Symptoms can include poor engine performance, reduced fuel efficiency, difficulty starting the engine, rough idling, and the check engine light being illuminated.
3. What causes the P1112 code to appear on a Subaru?
Common causes include a faulty atmospheric pressure sensor, damaged or disconnected wiring, a malfunctioning ECU, or issues with the sensor's electrical connections.
4. Can a dirty air filter trigger the P1112 code?
No, a dirty air filter is unlikely to cause this code. P1112 specifically relates to the atmospheric pressure sensor, not the airflow system.
5. How do I diagnose a P1112 code on a Subaru?
Diagnosis involves checking the atmospheric pressure sensor's wiring and connections, testing the sensor with a multimeter, and comparing its readings to expected values based on current altitude.
6. Can I drive my Subaru with a P1112 code?
Driving with a P1112 code is not recommended, as it may cause poor engine performance and could lead to further damage if left unresolved.
7. How do I fix the P1112 code on a Subaru?
Repairs may include replacing the atmospheric pressure sensor, repairing damaged wiring, cleaning corroded connections, or, in rare cases, reprogramming or replacing the ECU.
8. What tools are needed to troubleshoot a P1112 code?
You’ll need an OBDII scanner, a multimeter for testing electrical connections, and potentially a service manual for your specific Subaru model.
9. Is the atmospheric pressure sensor the same as the MAP sensor in a Subaru?
No, the atmospheric pressure sensor measures external air pressure, while the MAP (Manifold Absolute Pressure) sensor measures pressure inside the intake manifold.
10. Can extreme weather conditions cause a P1112 code?
Extreme weather conditions are unlikely to directly cause the P1112 code, but they may exacerbate existing issues with the sensor or its wiring.
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