P0057 Mitsubishi Code - Cylinder 2-3 Heated Oxygen Sensor Rear Heater Control Circuit Low
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 Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2, Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 harness is open shorted, Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 circuit poor electrical connection. 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
- P0057 Mitsubishi indicates Cylinder 2-3 Heated Oxygen Sensor Rear Heater Control Circuit Low.
- Common causes
- Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2, Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 harness is open shorted, Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 circuit poor electrical connection.
- 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 P0057 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 P0057 Mitsubishi?
- Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2
- Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 harness is open shorted
- Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 circuit poor electrical connection
- Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 circuit fuse
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0057 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 P0057 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 P0057 Mitsubishi Code
1. What does the OBDII code P0057 mean for a Mitsubishi?
P0057 indicates a problem in the heater control circuit of the rear oxygen sensor for cylinders 2 and 3, specifically showing low voltage.
2. What are the common symptoms of code P0057 in a Mitsubishi?
Symptoms may include an illuminated check engine light, increased fuel consumption, failed emissions tests, and poor engine performance.
3. What causes the P0057 code to appear in a Mitsubishi?
Common causes include a faulty oxygen sensor, damaged wiring or connectors in the heater circuit, a blown fuse, or a malfunctioning engine control module (ECM).
4. Can I drive my Mitsubishi with the P0057 code?
Driving with code P0057 is possible, but it may lead to reduced fuel efficiency and potential long-term damage to the catalytic converter if not addressed.
5. How do I diagnose the P0057 code on a Mitsubishi?
Start by checking the oxygen sensor wiring and connectors for damage, inspect the fuse for the heater circuit, and use a multimeter to test the sensor's resistance and voltage.
6. How do I fix the P0057 code on a Mitsubishi?
Repairs may involve replacing the rear oxygen sensor, repairing or replacing damaged wiring or connectors, or replacing a blown fuse.
7. How much does it cost to repair the P0057 code in a Mitsubishi?
The cost can range from $150 to $400, depending on whether the issue is with the oxygen sensor, wiring, or other components.
8. What happens if I ignore the P0057 code in my Mitsubishi?
Ignoring this code can lead to decreased fuel efficiency, poor engine performance, and potential damage to the catalytic converter over time.
9. Can a bad ECM cause the P0057 code in a Mitsubishi?
While rare, a malfunctioning ECM can cause the P0057 code if it's not properly controlling the heater circuit.
10. Is the P0057 code specific to Mitsubishi vehicles?
No, the P0057 code is a generic OBDII code that can appear in many vehicles, but its application and diagnosis may vary slightly between manufacturers.
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