Meaning of P0133
NCFarmerBoy
10-27-2005, 08:11 PM
Anyone know what the OBD2 code of p0133 means. I know the books say "O2 SENSOR CIRCUIT SLOW RESPONSE(BANK1 SENSOR1)". But what does that mean.
stuzman
10-27-2005, 09:17 PM
Anyone know what the OBD2 code of p0133 means. I know the books say "O2 SENSOR CIRCUIT SLOW RESPONSE(BANK1 SENSOR1)". But what does that mean.
Basically, just what it says. The upstream O2 sensor (driver side) is not reacting fast enough to the changes as the PCM is varying from a rich/lean condition. Here is a link which may explain it a little better.
http://www.obd-codes.com/trouble_codes/generic/p0133-oxygen-sensor-circuit-slow-response-bank-1-sensor-1.php
Most likely cause would be the O2 sensor. However, put a scanner, scope or DMM on it and verify that the voltage levels at the sensor are slowly changing.
Basically, just what it says. The upstream O2 sensor (driver side) is not reacting fast enough to the changes as the PCM is varying from a rich/lean condition. Here is a link which may explain it a little better.
http://www.obd-codes.com/trouble_codes/generic/p0133-oxygen-sensor-circuit-slow-response-bank-1-sensor-1.php
Most likely cause would be the O2 sensor. However, put a scanner, scope or DMM on it and verify that the voltage levels at the sensor are slowly changing.
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