Get the app
Quick access from your home screen.
DTC codes / P01xx · Fuel and air metering / P01A7
P01A7 indicates that the powertrain control module (PCM) has detected an intermittent or erratic signal from the alternative fuel rail pressure sensor circuit. This sensor monitors the pressure of the alternative fuel (such as compressed natural gas or ethanol) in the fuel rail, and the PCM sets this code when the voltage signal jumps or drops unexpectedly rather than following a smooth, predictable pattern.
Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
Get the app
Quick access from your home screen.