P0112 2009 Toyota Prius 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 2009 Toyota Prius 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 2009 Toyota Prius Description
What are the Possible Causes of the DTC P0112 2009 Toyota Prius?
- 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 2009 Toyota Prius?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0112 2009 Toyota Prius 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 2009 Toyota Prius Code
1. What are the common symptoms of OBDII code P0112 on a 2009 Toyota Prius?
The common symptoms of P0112 include poor engine performance, decreased fuel efficiency, rough idling, and potential stalling of the vehicle.
2. What does the OBDII code P0112 for a 2009 Toyota Prius mean?
P0112 indicates a low input signal from the intake air temperature (IAT) sensor circuit in the 2009 Toyota Prius.
3. What are the possible causes of OBDII code P0112 on a 2009 Toyota Prius?
Possible causes of P0112 in a 2009 Toyota Prius include a faulty IAT sensor, damaged or loose wiring in the IAT circuit, or a problem with the engine control module (ECM).
4. How can I diagnose the OBDII code P0112 on my 2009 Toyota Prius?
To diagnose P0112, you can use an OBDII scanner to read the code, visually inspect the IAT sensor and wiring for any visible damage, and perform a continuity test on the IAT sensor circuit.
5. Can a dirty air filter cause OBDII code P0112 on a 2009 Toyota Prius?
Yes, a dirty air filter can indirectly cause P0112 by affecting the accuracy of the IAT sensor readings due to restricted airflow into the engine.
6. How can I repair OBDII code P0112 on my 2009 Toyota Prius?
Repairing P0112 may involve replacing the faulty IAT sensor, repairing or replacing damaged wiring in the IAT circuit, or resetting the ECM to clear the code.
7. Is it safe to continue driving with OBDII code P0112 on a 2009 Toyota Prius?
It is not recommended to drive with P0112 as it can lead to further engine damage and decreased fuel efficiency. It is best to address the issue promptly.
8. Will disconnecting the battery reset OBDII code P0112 on a 2009 Toyota Prius?
Disconnecting the battery may temporarily clear the code, but it is important to diagnose and address the underlying issue causing P0112 to prevent it from reoccurring.
9. Can extreme weather conditions trigger OBDII code P0112 on a 2009 Toyota Prius?
Extreme temperatures can affect the IAT sensor readings and potentially trigger P0112. It is advisable to ensure proper insulation and protection of the IAT sensor in such conditions.
10. How much does it typically cost to repair OBDII code P0112 on a 2009 Toyota Prius?
The cost of repairing P0112 can vary depending on the cause of the issue, but a rough estimate would be between $100 to $300 for parts and labor.
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