P1149 – Honda DTC

Honda DTC P1149 – Primary HO2S (Sensor 1) Circuit Range/Performance Problem

DTC P1149 meaning on Honda

DTC P1149 for Honda refers to a Primary HO2S (Sensor 1) Circuit Range/Performance Problem. This diagnostic trouble code indicates an issue with the primary heated oxygen sensor (HO2S) located before the catalytic converter in the exhaust system.

Honda DTC P1149 symptoms

Symptoms of DTC P1149 on a Honda may include:

• Check Engine Light (MIL) illuminated
• Decreased fuel efficiency
• Engine running rough or misfiring
• Reduced engine performance

Honda DTC P1149 causes

Common causes of DTC P1149 on a Honda include:

• Faulty primary HO2S (Sensor 1)
• Wiring or connector issues in the HO2S circuit
• Exhaust system leaks
• Engine running rich or lean

Honda DTC P1149 seriousness

DTC P1149 should not be ignored as it can lead to decreased fuel efficiency and potential engine performance issues. It is recommended to address this code promptly to prevent further damage to the vehicle.

How to diagnose DTC P1149 on Honda

To diagnose DTC P1149 on a Honda, a mechanic may perform the following steps:

1. Use a scan tool to retrieve the DTC and freeze frame data
2. Inspect the primary HO2S for damage or contamination
3. Check the wiring and connectors for any signs of wear or corrosion
4. Perform a visual inspection of the exhaust system for leaks

How to fix DTC P1149 on Honda

To fix DTC P1149 on a Honda, the following steps may be taken:

1. Replace the primary HO2S (Sensor 1) if faulty
2. Repair or replace any damaged wiring or connectors in the HO2S circuit
3. Address any exhaust leaks in the system
4. Address any issues causing the engine to run rich or lean

How to erase DTC P1149 on Honda

To erase DTC P1149 on a Honda, the following steps can be followed:

1. Use a scan tool to clear the DTC and reset the Check Engine Light
2. Ensure the repair has been completed successfully before clearing the code
3. Perform a road test to verify that the code does not return

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