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(TA254-0406) P0132, front O2-sensor

TECHNICAL ADVICE - Quick information for your help
Bulletin Nbr: TA254-0406
Date: ........... April 2004
Market: All
P0132, front O2-sensor

VEHICLES CONCERNED

Saab 9-3 Sport Sedan and CV, M04- with B207.

BACKGROUND

The main reason for this problem is that the Bosch sensor has a natural behaviour that cause an overshoot on the signal, as long as the sensor is cold. Normally the output signal is not higher than 1V during this overshoot. But under some circumstance the output signal can show higher value than 1V during the overshoot.

CONDITIONS

O2-sensor front.

SYMPTOM DESCRIPTION

Moisture is one thing that could cause this abnormal high overshoot. When the car is stored for a long time, moisture is stored in the exhaust system and in the sensor, this moisture could cause high output signal.

ACTION

If the car has been stored longer then 1 month, please delete the DTC and ask the customer to return if the MIL is lighted again to replace the front O2-sensor.

If the car has lower mileage then 800km, please delete the DTC and ask the customer to return if the MIL is lighted again to replace the front O2-sensor.