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P1129 Volkswagen Code - Long Term Fuel Trim B2 System Too Rich

- Code Popularity: 7,287 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P1129 Volkswagen?

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 Oxygen Sensor
  • Faulty Mass Air Flow (MAF) Sensor
  • High fuel pressure
  • Canister purge solenoid stuck open
  • Oxygen Sensor harness is open or shorted
  • Oxygen Sensor circuit poor electrical connection
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How to Fix the DTC P1129 Volkswagen?

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 P1129 Volkswagen 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.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P1129 Volkswagen Description

The Engine Control Module (ECM) monitors the Long-Term Fuel Trim B2 System. The ECM sets the OBDII code when the Long-Term Fuel Trim B2 System is not to factory specifications.

OBDII Code P1129 Volkswagen - Long Term Fuel Trim B2 System Too Rich - AutoCodes.com
P1129 Volkswagen Code - Long Term Fuel Trim B2 System Too Rich

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Code P1129 Volkswagen comments

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