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Code 45 - Rich O2 Sensor Failure

Fig 1: Flow Chart, Code 45 - Rich Oxygen (O2) Sensor Failure

NOTE: If M/C solenoid does not click with ignition ON and TEST terminal grounded, and there is no Code 23 or 54, check for sticking M/C solenoid. If Code 54 is present, go to Chart 54 first.

Fig 2: Flow Chart, Code 45 - Rich Oxygen (O2) Sensor Failure