P0052 Mitsubishi Code - Cylinder 2-3 Heated Oxygen Sensor Front Heater Control Circuit High
Quick Answer
Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. Common causes include Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 harness is open shorted to ground, Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 circuit poor electrical connection, Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1. 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
- P0052 Mitsubishi indicates Cylinder 2-3 Heated Oxygen Sensor Front Heater Control Circuit High.
- Common causes
- Common causes include Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 harness is open shorted to ground, Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 circuit poor electrical connection, Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1.
- 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 P0052 Mitsubishi Description
In order to achieve the require temperature, a heater element is included inside the heated oxygen sensor. The ECM controls the heated oxygen sensor heater element based on signals from the engine coolant temperature and engine load. The ECM controls the heater element circuit by allowing current flow to ground.
The ECM monitors the voltage signal received through the heater element circuit and determines the state of the circuit by comparing the voltage detected with the factory specifications.
What are the Possible Causes of the DTC P0052 Mitsubishi?
- Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 harness is open shorted to ground
- Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 circuit poor electrical connection
- Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1
- Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 circuit fuse
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0052 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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0052 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 P0052 Mitsubishi Code
1. What does the OBDII code P0052 mean on a Mitsubishi?
P0052 indicates a problem with the heater control circuit of the front heated oxygen sensor (HO2S) for cylinder bank 2-3. The sensor's heater circuit voltage is higher than expected.
2. What are the common symptoms of code P0052 on a Mitsubishi?
Symptoms include poor fuel efficiency, rough idling, increased emissions, the check engine light turning on, and potentially a failed emissions test.
3. What causes the P0052 code to appear in a Mitsubishi vehicle?
Common causes include a faulty oxygen sensor, damaged wiring or connectors, a short circuit, or a malfunctioning engine control module (ECM).
4. Can I drive my Mitsubishi with a P0052 code?
While the vehicle may still be drivable, it’s not recommended because the issue can lead to poor engine performance, higher emissions, and possible long-term damage.
5. How do I diagnose the P0052 code on my Mitsubishi?
Start by checking the oxygen sensor wiring and connectors for damage, test the heater circuit for continuity, and use a multimeter to verify proper voltage and resistance.
6. How do I fix the P0052 code on a Mitsubishi?
Repairs may include replacing the faulty oxygen sensor, repairing or replacing damaged wiring, or addressing issues with the ECM if needed.
7. How much does it cost to repair the P0052 code on a Mitsubishi?
The repair cost varies, but replacing an oxygen sensor typically ranges from $150 to $500, depending on parts and labor costs.
8. Can a dirty or clogged oxygen sensor trigger the P0052 code?
No, this code is specifically related to the heater control circuit, not sensor contamination. However, a faulty sensor can still cause the code.
9. Does the P0052 code affect fuel economy?
Yes, a malfunctioning oxygen sensor heater can cause improper air-fuel mixture readings, leading to decreased fuel efficiency.
10. Should I clear the P0052 code after making repairs?
Yes, clear the code with an OBDII scanner after completing repairs, then test drive the vehicle to ensure the issue is resolved.
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