P0136 Mitsubishi Code - HO2S12 Circuit Fault
Quick Answer
The heated oxygen sensor 2 (HO2S), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. Common causes include Faulty Rear Heated Oxygen Sensor Bank 1, Rear Heated Oxygen Sensor Bank 1 harness is open or shorted, Rear Heated Oxygen Sensor Bank 1 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
- P0136 Mitsubishi indicates HO2S12 Circuit Fault.
- Common causes
- Common causes include Faulty Rear Heated Oxygen Sensor Bank 1, Rear Heated Oxygen Sensor Bank 1 harness is open or shorted, Rear Heated Oxygen Sensor Bank 1 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 P0136 Mitsubishi Description
What are the Possible Causes of the DTC P0136 Mitsubishi?
- Faulty Rear Heated Oxygen Sensor Bank 1
- Rear Heated Oxygen Sensor Bank 1 harness is open or shorted
- Rear Heated Oxygen Sensor Bank 1 circuit poor electrical connection
- Inappropriate fuel pressure
- Faulty fuel injectors
- Intake air leaks may be faulty
- Exhaust gas leaks
How to Fix the DTC P0136 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 P0136 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 P0136 Mitsubishi Code
1. What does the OBDII code P0136 mean for Mitsubishi vehicles?
P0136 indicates a fault in the circuit of the downstream oxygen sensor (HO2S12), which monitors the efficiency of the catalytic converter.
2. What are the common symptoms of code P0136 in a Mitsubishi?
Symptoms may include poor fuel economy, increased emissions, a check engine light, and potential engine performance issues.
3. What causes the P0136 code in Mitsubishi vehicles?
Common causes include a faulty downstream oxygen sensor, damaged wiring or connectors, exhaust leaks, or issues with the engine control module (ECM).
4. Can a bad oxygen sensor cause the P0136 code?
Yes, a malfunctioning downstream oxygen sensor is a primary cause of this code.
5. How can I diagnose the P0136 code in a Mitsubishi?
Inspect the downstream oxygen sensor, check for damaged wiring or loose connections, and look for exhaust leaks near the sensor.
6. Can driving with code P0136 damage my Mitsubishi?
While it’s unlikely to cause immediate damage, prolonged driving with this code can lead to reduced fuel efficiency and higher emissions.
7. How do I fix the P0136 code in a Mitsubishi vehicle?
Common fixes include replacing the downstream oxygen sensor, repairing damaged wiring, fixing exhaust leaks, or addressing ECM issues if necessary.
8. Do I need special tools to resolve the P0136 code?
You may need an OBDII scanner to diagnose the code and a wrench or specialized tools to replace the oxygen sensor.
9. How much does it cost to repair the P0136 code in Mitsubishi vehicles?
Repair costs typically range from $150 to $400, depending on whether you need to replace the sensor, repair wiring, or fix an exhaust issue.
10. Can a P0136 code be cleared without repair?
While you can clear the code with an OBDII scanner, it will likely return if the underlying issue isn’t fixed.
Discuss the causes and fixes for P0136 Mitsubishi OBDII Code
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