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P0134 2009 Honda Accord Code - Air/Fuel Ratio Sensor Bank 1, Sensor 1 Heater System Malfunction

- Code Popularity: 5,665 Views
- Repair Importance Level: 2/3
- Repair Difficulty Level: 2/3
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What are the Possible Causes of the DTC P0134 2009 Honda Accord?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Air/Fuel Ratio Sensor Bank 1
  • Air/Fuel Ratio Sensor Bank 1 harness is open or shorted
  • Air/Fuel Ratio Sensor Bank 1 circuit poor electrical connection
  • Inappropriate fuel pressure
  • Faulty fuel injectors
  • Intake air leaks may be faulty
  • Exhaust gas leaks
⚠ Does your Honda have Safety Recalls? → Check here

How to Fix the DTC P0134 2009 Honda Accord?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0134 2009 Honda Accord code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

When is the Code Detected?

1. When the A/F sensor does not activate in a fixed time after the A/F sensor heater starts to warm up (within high A/F sensor internal resistance), a malfunction of the A/F sensor heater is detected, and a DTC is stored.
2. When the A/F sensor heater does not reactivate within a fixed time after the heater became inactive (with high A/F sensor internal resistance) from active (with low A/F sensor internal resistance) though the heater is ON, a malfunction in the A/F sensor heater is detected, and a DTC is stored.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • High Fuel Consumption
  • Excessive Smoke from Exhaust

Code P0134 2009 Honda Accord Description

The air/fuel ratio (A/F) sensor is activated by warming the element with the heater and by maintaining it at a steady high temperature to calculate accurate air/fuel (A/F) ratio. The A/F sensor does not become active when the element is not warmed enough due to a heater malfunction, etc., and the exhaust emissions deteriorate. The Engine Control Module (ECM)/Powertrain Control Module (PCM) monitors the A/F sensor active condition by the A/F sensor internal resistance.

OBDII Code P0134 2009 Honda Accord - Air/Fuel Ratio Sensor Bank 1, Sensor 1 Heater System Malfunction - AutoCodes.com
P0134 2009 Honda Accord Code - Air/Fuel Ratio Sensor Bank 1, Sensor 1 Heater System Malfunction

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