P0072 Mitsubishi Code - Ambient Air Temperature Sensor Circuit Low
Quick Answer
The P0072 code for Mitsubishi vehicles indicates a problem with the Ambient Air Temperature (AAT) sensor circuit being too low. Common causes include Faulty Ambient Air Temperature (AAT) sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or poor connections in the sensor circuit. 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
- P0072 Mitsubishi indicates Ambient Air Temperature Sensor Circuit Low.
- Common causes
- Common causes include Faulty Ambient Air Temperature (AAT) sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or poor connections in the sensor circuit.
- 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.
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Code P0072 Mitsubishi Description
The P0072 code for Mitsubishi vehicles indicates a problem with the Ambient Air Temperature (AAT) sensor circuit being too low. The AAT sensor is responsible for measuring the temperature of the air outside the vehicle and sending this information to the engine control module (ECM). This data is crucial for the ECM to adjust the air-fuel mixture and ignition timing to optimize engine performance and fuel efficiency. When the AAT sensor circuit is reading a low voltage or resistance, it can lead to incorrect temperature readings being sent to the ECM, resulting in potential drivability issues.
Common Causes of P0072 Mitsubishi
- Faulty Ambient Air Temperature (AAT) sensor
- Damaged wiring or connectors in the sensor circuit
- Corrosion or poor connections in the sensor circuit
- Issues with the Engine Control Module (ECM)
- Environmental factors such as extreme temperatures affecting sensor performance
Symptoms of P0072 Mitsubishi
- Decreased fuel efficiency
- Rough idling
- Hesitation during acceleration
- Stalling
- Illumination of the check engine light
How to Fix P0072 Mitsubishi
- Begin by locating the Ambient Air Temperature (AAT) sensor, typically located behind the front bumper or near the radiator.
- Inspect the sensor and its wiring for any visible damage, corrosion, or loose connections.
- Test the AAT sensor using a multimeter to check for proper voltage and resistance readings.
- If the sensor is faulty, replace it with a new one following manufacturer's guidelines.
- Clear the diagnostic trouble codes using an OBD-II scanner and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0072 Mitsubishi
The cost of repairing a P0072 code on a Mitsubishi vehicle can vary depending on the specific cause of the issue. Generally, the price range for parts such as a new AAT sensor can be between $50 to $100. Labor costs at auto repair shops typically range between $80 to $150 per hour. Therefore, the total repair cost could range from $150 to $300 or more, depending on the shop's rates and any additional diagnostic or repair work required. It is advisable to consult with a professional mechanic to get an accurate estimate based on your vehicle's make and model.
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Frequently Asked Questions about P0072 Mitsubishi Code
1. What does the OBDII code P0072 mean on a Mitsubishi?
P0072 indicates a problem with the Ambient Air Temperature Sensor Circuit, specifically that the sensor is reading a voltage lower than the expected range.
2. What are the common symptoms of code P0072 in a Mitsubishi?
Common symptoms include incorrect ambient temperature readings on the dashboard, poor climate control performance, and possible effects on engine performance or air conditioning.
3. What causes the P0072 code to appear in a Mitsubishi?
Potential causes include a faulty ambient air temperature sensor, damaged wiring or connectors, a short circuit, or a malfunctioning PCM (Powertrain Control Module).
4. How do I fix the P0072 code on my Mitsubishi?
Start by inspecting the sensor and its wiring for damage or corrosion, clean or repair connectors if necessary, and replace the sensor if it’s faulty.
5. Where is the ambient air temperature sensor located on a Mitsubishi?
The ambient air temperature sensor is typically located near the front grille or bumper, where it can measure external air temperature.
6. Can I drive my Mitsubishi with a P0072 code?
While it may not immediately affect drivability, prolonged issues can impact climate control and fuel efficiency, so it’s best to address the problem promptly.
7. How can I test the ambient air temperature sensor on a Mitsubishi?
Using a multimeter, check the sensor’s resistance and compare it to the manufacturer’s specifications for the current temperature.
8. Will clearing the P0072 code fix the issue permanently?
Clearing the code will reset the warning temporarily, but the issue will return if the underlying problem isn’t resolved.
9. How much does it cost to fix the P0072 code on a Mitsubishi?
The cost varies but typically includes the price of a replacement sensor ($20-$50) and potential labor costs if professional repair is needed.
10. Can a faulty ambient air temperature sensor affect my Mitsubishi’s fuel economy?
Yes, incorrect temperature readings may cause improper air-fuel mixture adjustments, potentially reducing fuel efficiency.
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