Code Enable Criteria

• Engine is cranking for 0.5 second or running for one second.
• Engine speed is more than 50 RPM.
• Ignition 1 signal is greater than 8 volts.
• Idle Air Control (IAC) position is more than 5 counts.
• All these conditions are present for greater than one second.

DTC sets when MAF sensor frequency signal is less than 1200 Hz for more than 12 seconds.