TT 26-14-02

Tech Tips
Date: November 7, 2014
TT 26-14-02
2009-2015 Jetta/Jetta Sportwagen, Golf, Passat-Oxygen
Sensor Reset Procedures
For 2009-2014 vehicles with engine codes CJAA or CBEA:
Disconnect both O2 sensors (front and rear), start engine and let idle. Check MVB's
41/4 and 136/4 and verify have both changed from a 1 to a 0 (you may have to
drive the car 4 miles to get them to reset to 0). Also a key cycle may be required for
values to reset. This forces the ECM to re-learn the O2 sensor adaptation. Once
MVB 41/4 and 136/4 read 0, re-connect the O2 sensors, road test and recheck
for faults.
For 2012-2015 vehicles with engine codes CKRA, CVCA or CRUA:
Advised tech to go to control module OBD, DTC memory, clear all OBD DTC's
and then select basic settings," Reset oxygen sensor learned values". Road test
and reevaluate for any concerns.
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