1, 2 and 3 Digit Codes: 114

Trouble Code Number
- Scan tool 114
- General scan tool P1899
- MIL 37

Fault Message
- Park/Neutral (PNP) Switch Failure

Background
- The diagnostics for the PNP switch are divided into two categories.
- The first is trying to identify if the PNP switch is indicating park or neutral while driving.
- The second involves identifying a condition in which the vehicle is in park or neutral but the PCM indicates drive or reverse.

Range of Check
- Vehicle speed greater than 80 km/h (50 mph)
- Engine speed between 1984 and 4480 r/min
- Throttle position sensor voltage is greater than 0.49 sensor. volts above minimum throttle position
- MAP is greater than 66% of barometric pressure

Set Condition
- Park/Neutral switch output voltage: High

Probable Cause
- PNP switch failed
- PNP switch related circuit failed
- PCM failed