OBDII Code List

P2096 VOLKSWAGEN - Post Catalyst Fuel Trim System Too Lean

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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P2096 VOLKSWAGEN Possible Causes

  • Low fuel pressure
  • Misfire condition
  • Large vacuum leak
  • Air leak near sensor
  • Plugged catalytic converter
  • Lean air/fuel ratio
  • Faulty front O2 sensor

First diagnose P2096 VOLKSWAGEN code

    Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Cost of diagnosing the P2096 VOLKSWAGEN code

    Labor: 1.0

    The cost of diagnosing the P2096 VOLKSWAGEN code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

P2096 VOLKSWAGEN Possible Symptoms

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

P2096 Volkswagen Description

The catalyst's efficiency is demonstrated by its ability to oxidize CO and hydrocarbon emissions. The Powertrain Control Module (PCM) compares the output signals of the front and rear oxygen sensors to determine whether the output of the rear sensor is beginning to match the output of the front oxygen sensor. Air/fuel mixture compensation keeps the frequency of the front oxygen sensor high due to the changes from rich-to-lean combusition. The catalyst causes the rear oxygen sensor to have a lower frequency. As the catalyst wears, the rear oxygen sensor’s signal trace begins to match the front oxygen sensor’s signal trace. That is because the catalyst becomes saturated with oxygen and cannot use the oxygen to convert hydrocarbon and CO into H₂O and CO₂ with the same efficiency as when it was new. A completely worn catalyst shows a 100% match between the frequency of the front and rear sensors.
OBDII Code P2096 Volkswagen - Post Catalyst Fuel Trim System Too Lean -

P2096 VOLKSWAGEN More Information

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