Diagnostic Aids

Code 45 or rich exhaust is most likely caused by improper fuel pressure (too high), HEI shielding, canister purge, MAP sensor, Throttle Position (TP) sensor, O2 sensor contamination, fuel injectors, or EGR system. To diagnose components, refer to I - SYS/COMP TESTS article in this section. If code is intermittent, see TESTS W/O CODES article in this section.

Fig 1: Code 45 - Schematic (Storm - VIN 6) Non-Heated Oxygen Sensor Circuit, Rich Exhaust Indicated

Fig 2: Code 45 - Flow Chart (Storm - VIN 6) Non-Heated Oxygen Sensor Circuit, Rich Exhaust Indicated