DTC Description

The PCM compares the airmeter input frequency to low and high limits. When the frequency is outside the allowable limits, the circuit is determined to be failed.

If PCM detects that frequency signal of MAFS is lower than 1000 Hz for more than 75 second failure during one diagnostic test (125 second) while enable condition is met PCM determines that a fault exists and a DTC is stored. MIL (Malfunction Indication Lamp) turns on when the malfunction lasts till consecutive 2 driving cycle.