P0152 Mitsubishi Code - Cylinder 2-3 Heated Oxygen Front Sensor Circuit High Voltage
Quick Answer
The front heated oxygen sensor (or O2 sensor 1) is placed into the exhaust manifold. Common causes include Faulty Front Heated Oxygen Sensor Bank 2, Intake air leaks may be faulty, Exhaust gas leaks. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- P0152 Mitsubishi indicates Cylinder 2-3 Heated Oxygen Front Sensor Circuit High Voltage.
- Common causes
- Common causes include Faulty Front Heated Oxygen Sensor Bank 2, Intake air leaks may be faulty, Exhaust gas leaks.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Code P0152 Mitsubishi Description
What are the Possible Causes of the DTC P0152 Mitsubishi?
- Faulty Front Heated Oxygen Sensor Bank 2
- Intake air leaks may be faulty
- Exhaust gas leaks
- Front Heated Oxygen Sensor Bank 2 harness is open or shorted
- Front Heated Oxygen Sensor Bank 2 circuit poor electrical connection
- Inappropriate fuel pressure
- Faulty fuel injectors
How to Fix the DTC P0152 Mitsubishi?
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 P0152 Mitsubishi 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 P0152 Mitsubishi Code
What does the OBDII code P0152 mean for a Mitsubishi?
P0152 indicates that the heated oxygen sensor (HO2S) for cylinder bank 2-3 (front sensor) is reporting a high voltage signal, suggesting the air-fuel mixture may be too rich.
What are the common symptoms of code P0152 in a Mitsubishi?
Symptoms may include the Check Engine Light turning on, poor fuel economy, rough idling, reduced engine performance, and a strong fuel smell from the exhaust.
What causes the P0152 code in a Mitsubishi?
Common causes include a faulty oxygen sensor, a shorted sensor circuit, a rich-running engine due to a malfunctioning fuel injector, or issues with the engine control module (ECM).
Can a bad oxygen sensor trigger the P0152 code?
Yes, a malfunctioning oxygen sensor that produces a consistently high voltage signal can trigger the P0152 code.
How do you diagnose the P0152 code in a Mitsubishi?
Diagnosis involves using an OBDII scanner to confirm the code, inspecting the oxygen sensor and wiring for damage or shorts, and checking for other related codes or signs of a rich-running engine.
Can I drive my Mitsubishi with the P0152 code?
Driving with a P0152 code is possible but not recommended, as it can lead to poor fuel efficiency, increased emissions, and potential damage to the catalytic converter.
How do you fix the P0152 code in a Mitsubishi?
Repairs may include replacing the oxygen sensor, repairing damaged wiring, cleaning or replacing fuel injectors, or updating/reprogramming the ECM if necessary.
How much does it cost to fix the P0152 code in a Mitsubishi?
The repair cost varies depending on the issue. Replacing an oxygen sensor typically costs $150–$400, while more extensive issues like ECM repairs or injector replacements can be more expensive.
Can a vacuum leak cause the P0152 code in a Mitsubishi?
A vacuum leak is unlikely to cause P0152, as this code is more related to a rich fuel condition or sensor circuit issues rather than a lean condition induced by a vacuum leak.
What tools are needed to troubleshoot the P0152 code?
You’ll need an OBDII scanner, a digital multimeter to check sensor voltage and wiring continuity, and possibly a fuel pressure gauge to test fuel system performance.
Discuss the causes and fixes for P0152 Mitsubishi OBDII Code
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