# 2341 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,
California vehicles: Check Engine Light should be ON
# 2342 Oxygen Sensor Signal (voltage) is not changing up and down, (Shown for ABH Engine Only)
Signal shorted to ground or to +12V,
Fuse #5 blown, O2 Sensor heating element not working,
Ground problem between ECU pin 10 and engine block,
fuel pressure too low or too high, intake or exhaust system leak, defective ignition system component,
intake air leak after air mass sensor, O2 sensor is faulty
Overly rich exhaust, Spark Plug fouling,
California vehicles: Check Engine Light should be ON
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