P1129

DTC P1129
Upstream oxygen sensors connected incorrectly (swapped) Drive cycle C:Signal implausible.

Possible cause:
^ Upstream oxygen sensors incorrectly fitted.

Upstream Oxygen Sensors Incorrectly Fitted.
CHECK THE FOLLOWING:
^ Upstream sensors are swapped over - bank A to bank B and bank B to bank A.
POSSIBLE FAULTS
^ Upstream oxygen sensors swapped.