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G39 Lambda Oxygen (O2) Sensor Info and Function with PNs
* 2341 (Blink Fault Code), 00537 VAG1551/2 Fault Code Number
Oxygen Sensor Control Limit exceeded,
fuel pressure too low or too high, intake or exhaust leak, defective ignition system component, intake air leak after air mass sensor, O2 sensor is faulty
Symptom: CO before catalyst is below 0.3% or greater than 1.0%, Extremely lean or overly rich exhaust, Spark Plug fouling.
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