Pcm Code E046, Right To Left Bank Fueling Imbalance: Action

PCM turns on SERVICE ENGINE SOON light.

NOTE: Test numbers refer to numbers on diagnostic chart.

O2 sensor must be able to generate sufficient voltage and cross counts to cause system to go into "closed loop".
Contaminated O2 sensor can slow reaction time of sensor. PCM Codes E013, E017, E042, E043, E044 and E045 are designed to detect sensor faults. Slow reaction time may cause driveability problems.

Fig 1: PCM Code E046, Schematic, Right to Left Bank Fueling Imbalance

Fig 2: PCM Code E046, Flow Chart, Right to Left Bank Fueling Imbalance

Fig 3: PCM Code E046