Toyota: some model year vehicles may exhibit MIL on; DTC condition with one of the following diagnostic...

Bulletin number

TSB-0344-08 REV1

Component

Engine and engine cooling: engine

Summary

Toyota: some model year vehicles may exhibit mil on; dtc condition with one of the following diagnostic trouble codes (dtcs)-mass air flow circuit range/performance problem; mass air flow circuit low input; mass air flow circuit high input; throttle/pedal position sensor/switch a circuit range/performance problem; insufficient coolant temperature for closed loop fuel control; coolant thermostat (coolant temperature below thermostat regulating temperature); system too rich; ignition coil # primary/secondary circuit; oxygen (a/f) sensor pumping current circuit/open; oxygen (a/f) sensor pumping current circuit low. To address condition, and improved engine wire harness was developed.

Owners of these vehicles have filed 26 complaints in the engine category.