P0112 Subaru Code - Intake Air Temperature Circuit Low Input
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 (IAT) sensor, Dirty air filter, Intake Air Temperature (IAT) 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 Subaru indicates Intake Air Temperature Circuit Low Input.
- Common causes
- Common causes include Faulty Intake Air Temperature (IAT) sensor, Dirty air filter, Intake Air Temperature (IAT) 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 Subaru Description
What are the Possible Causes of the DTC P0112 Subaru?
- Faulty Intake Air Temperature (IAT) sensor
- Dirty air filter
- Intake Air Temperature (IAT) sensor harness is open or shorted
- Intake Air Temperature (IAT) sensor circuit poor electrical connection
How to Fix the DTC P0112 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 P0112 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 P0112 Subaru Code
1. What are the common symptoms of OBDII code P0112 in a Subaru related to the Intake Air Temperature Circuit Low Input?
- Common symptoms include poor engine performance, rough idling, decreased fuel efficiency, and potential stalling.
2. What are the possible causes triggering the OBDII code P0112 in a Subaru?
- The code P0112 in a Subaru is often caused by a faulty intake air temperature (IAT) sensor, damaged wiring or connectors, or issues with the engine control module (ECM).
3. How does a malfunctioning intake air temperature (IAT) sensor contribute to the OBDII code P0112 in a Subaru?
- A malfunctioning IAT sensor can provide incorrect readings to the ECM, leading to a low input signal error and triggering the P0112 code.
4. What are some diagnostic steps to identify the root cause of OBDII code P0112 in a Subaru?
- Diagnostic steps may include checking the IAT sensor for proper operation, inspecting the wiring and connectors for damage, and verifying the ECM functionality using a scan tool.
5. Can a dirty or contaminated intake air temperature (IAT) sensor cause the OBDII code P0112 in a Subaru?
- Yes, a dirty or contaminated IAT sensor can provide inaccurate readings, leading to a low input signal error and triggering the P0112 code.
6. How can I reset the OBDII code P0112 in a Subaru after repairing the underlying issue?
- The OBDII code P0112 can be reset using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes to clear the ECM's memory.
7. Are there any repair tips for addressing the OBDII code P0112 related to Intake Air Temperature Circuit Low Input in a Subaru?
- When repairing the P0112 code, ensure to use a high-quality replacement IAT sensor, check and repair any damaged wiring or connectors, and perform a thorough inspection of the intake air system.
8. Can driving with the OBDII code P0112 unresolved cause further damage to a Subaru's engine?
- Continuing to drive with the P0112 code unresolved can potentially lead to decreased engine performance, reduced fuel efficiency, and in some cases, further damage to engine components.
9. How crucial is it to address the OBDII code P0112 promptly in a Subaru?
- It is important to address the P0112 code promptly to prevent potential engine performance issues, improve fuel efficiency, and avoid further complications that may arise from driving with a faulty intake air temperature circuit.
10. Is it recommended to seek professional help for diagnosing and repairing the OBDII code P0112 in a Subaru?
- If you are not confident in diagnosing or repairing the P0112 code yourself, it is advisable to seek assistance from a qualified mechanic or Subaru dealership to ensure the issue is properly resolved.
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