AutoCodes – Mitsubishi – P0145 Mitsubishi

P0145 Mitsubishi Code - Heated Oxygen Sensor Circuit Slow Response Bank 1 Sensor 3

Quick Answer

The rear heated oxygen sensor (or sensor 3 for some vehicles), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. Common causes include Faulty Heated Oxygen Sensor Bank 1 Sensor 3, Heated Oxygen Sensor Bank 1 Sensor 3 harness is open or shorted, Heated Oxygen Sensor Bank 1 Sensor 3 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
P0145 Mitsubishi indicates Heated Oxygen Sensor Circuit Slow Response Bank 1 Sensor 3.
Common causes
Common causes include Faulty Heated Oxygen Sensor Bank 1 Sensor 3, Heated Oxygen Sensor Bank 1 Sensor 3 harness is open or shorted, Heated Oxygen Sensor Bank 1 Sensor 3 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.
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Code Popularity 11,518
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0145 Mitsubishi Description

The rear heated oxygen sensor (or sensor 3 for some vehicles), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. Even if switching characteristics of the heated oxygen sensor 1 are shifted, the air-fuel ratio is controlled to stoichiometric, by the signal from the heated oxygen sensor 3.
This sensor is made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. Under normal conditions the heated oxygen sensor 3 is not used for engine control operation.
OBDII Code P0145 Mitsubishi - Heated Oxygen Sensor Circuit Slow Response Bank 1 Sensor 3 - AutoCodes.com
P0145 Mitsubishi Code - Heated Oxygen Sensor Circuit Slow Response Bank 1 Sensor 3

What are the Possible Causes of the DTC P0145 Mitsubishi?

  • Faulty Heated Oxygen Sensor Bank 1 Sensor 3
  • Heated Oxygen Sensor Bank 1 Sensor 3 harness is open or shorted
  • Heated Oxygen Sensor Bank 1 Sensor 3 circuit poor electrical connection

How to Fix the DTC P0145 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 P0145 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.

Need more information about the P0145 Mitsubishi code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0145 Mitsubishi Code

1. What are the common symptoms of OBDII code P0145 in a Mitsubishi, indicating a Heated Oxygen Sensor Circuit Slow Response Bank 1 Sensor 3 issue?

- Common symptoms include poor fuel efficiency, rough idling, and a noticeable decrease in engine performance.

2. What are the possible causes of OBDII code P0145 in a Mitsubishi related to the Heated Oxygen Sensor Circuit Slow Response Bank 1 Sensor 3?

- The code P0145 can be triggered by a faulty oxygen sensor, damaged wiring or connectors, or a malfunctioning engine control module (ECM).

3. How can I diagnose the OBDII code P0145 in my Mitsubishi to confirm a Heated Oxygen Sensor Circuit Slow Response Bank 1 Sensor 3 problem?

- Use an OBDII scanner to retrieve the specific code, then visually inspect the sensor and its connections for any signs of damage or corrosion.

4. What are some repair tips for addressing OBDII code P0145 in a Mitsubishi with a Heated Oxygen Sensor Circuit Slow Response Bank 1 Sensor 3 issue?

- Consider replacing the oxygen sensor if it's old or showing signs of wear, check and repair any damaged wiring, and ensure all connections are secure.

5. Can driving with OBDII code P0145 present in a Mitsubishi with a Heated Oxygen Sensor Circuit Slow Response Bank 1 Sensor 3 problem cause further damage?

- Continuing to drive with this code may lead to decreased fuel efficiency, increased emissions, and potential damage to the catalytic converter over time.

6. How do I reset the OBDII code P0145 in my Mitsubishi after addressing the Heated Oxygen Sensor Circuit Slow Response Bank 1 Sensor 3 issue?

- Use an OBDII scanner to clear the code, or disconnect the car's battery for a few minutes to reset the ECM and turn off the check engine light.

7. Is it possible to prevent OBDII code P0145 from occurring in my Mitsubishi with regular maintenance?

- Regularly inspecting and replacing oxygen sensors as recommended, along with keeping up with overall vehicle maintenance, can help prevent this code from occurring.

8. Can a DIY enthusiast with basic automotive knowledge repair OBDII code P0145 related to the Heated Oxygen Sensor Circuit Slow Response Bank 1 Sensor 3 in a Mitsubishi?

- Yes, replacing the oxygen sensor or fixing wiring issues can be relatively simple tasks for someone with basic automotive knowledge and the right tools.

9. How long does it typically take to resolve OBDII code P0145 caused by a Heated Oxygen Sensor Circuit Slow Response Bank 1 Sensor 3 issue in a Mitsubishi?

- The repair time can vary depending on the exact cause, but resolving this code usually takes between 1 to 3 hours if the necessary parts are readily available.

10. Are there any recalls or service bulletins related to OBDII code P0145 in Mitsubishi vehicles with Heated Oxygen Sensor Circuit Slow Response Bank 1 Sensor 3 problems?

- It's advisable to check with Mitsubishi dealerships or online databases for any recalls or service bulletins specifically addressing the P0145 code in your vehicle model.

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