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P1144 – Mazda DTC

Mazda DTC P1144 – HO2S Bank 1 Sensor 3 Signal Above 0.45v (A/F Ratio Too Rich)

DTC P1144 meaning on Mazda

DTC P1144 on a Mazda indicates that the Heated Oxygen Sensor (HO2S) Bank 1 Sensor 3 signal is reading above 0.45 volts, signaling an Air/Fuel (A/F) ratio that is too rich.

Mazda DTC P1144 symptoms

Symptoms of DTC P1144 on a Mazda may include:

  • Check Engine Light illuminated
  • Decreased fuel efficiency
  • Engine running rough or misfiring

Mazda DTC P1144 causes

Common causes of DTC P1144 on a Mazda include:

  • Faulty Heated Oxygen Sensor (HO2S) Bank 1 Sensor 3
  • Vacuum leaks
  • Fuel pressure regulator issues
  • Exhaust system leaks

Mazda DTC P1144 seriousness

DTC P1144 should be addressed promptly as it can lead to decreased fuel efficiency and potential engine performance issues if left unresolved.

How to diagnose DTC P1144 on Mazda

To diagnose DTC P1144 on a Mazda, follow these steps:

  1. Use an OBD-II scanner to retrieve the fault code and freeze frame data
  2. Inspect the Heated Oxygen Sensor (HO2S) Bank 1 Sensor 3 for any visible damage or contamination
  3. Check for vacuum leaks or exhaust system leaks
  4. Test the fuel pressure regulator

How to fix DTC P1144 on Mazda

To fix DTC P1144 on a Mazda, consider the following:

  1. Replace the faulty Heated Oxygen Sensor (HO2S) Bank 1 Sensor 3
  2. Repair any vacuum leaks or exhaust system leaks
  3. Address any fuel pressure regulator issues

How to erase DTC P1144 on Mazda

To erase DTC P1144 on a Mazda, you can clear the code using an OBD-II scanner or by disconnecting the vehicle’s battery for a few minutes to reset the system.

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