P1112 Honda Code - Intake Air Temperature Sensor Circuit Intermittent Low Voltage
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 Honda indicates Intake Air Temperature Sensor Circuit Intermittent Low 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 P1112 Honda Description
What are the Possible Causes of the DTC P1112 Honda?
- 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 Honda?
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 Honda 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 Honda Code
What does the OBDII code P1112 mean on a Honda?
Code P1112 indicates an intermittent low voltage signal in the intake air temperature (IAT) sensor circuit, which helps the engine control module (ECM) monitor and adjust air-fuel ratios based on intake air temperature.
What are the common symptoms of a P1112 code on a Honda?
Symptoms may include a check engine light, reduced fuel efficiency, poor engine performance, difficulty starting, or irregular engine idle.
What causes the P1112 code to appear on a Honda?
The code is often caused by a faulty IAT sensor, damaged or corroded wiring, loose electrical connections, or a malfunctioning ECM.
Can I drive my Honda with a P1112 code?
While it may be possible to drive with this code, it is not recommended, as it can result in poor performance, reduced fuel efficiency, and potential damage to the engine over time.
How do I diagnose the P1112 code on my Honda?
Start by inspecting the IAT sensor and its wiring for damage or loose connections. Use a multimeter to test the sensor’s resistance and voltage, and check for continuity in the circuit.
How can I fix the P1112 code on a Honda?
Repairs may include replacing the IAT sensor, repairing or replacing damaged wiring, cleaning corroded connections, or, in rare cases, replacing the ECM if it’s faulty.
How much does it cost to fix the P1112 code on a Honda?
Costs vary depending on the issue, but replacing an IAT sensor typically costs $50–$150 for parts and labor, while wiring repairs or ECM replacement may cost more.
Can a dirty air filter cause the P1112 code on a Honda?
While a dirty air filter does not directly cause this code, it can contribute to airflow issues that may affect sensor readings. Replacing the air filter is a good maintenance step.
Will clearing the P1112 code solve the issue?
Clearing the code may turn off the check engine light temporarily, but the underlying issue must be resolved to prevent the code from returning.
Is the P1112 code specific to Honda vehicles?
No, the P1112 code can appear on other vehicle makes, but its definition and diagnostics may vary. Always consult your vehicle’s repair manual for manufacturer-specific details.
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