DTC P0651: A/C Pressure Sensor/Fuel Tank Pressure Sensor 5-Volt Reference Circuit Out Of Range: Notes
WARNING: This page is about a different car, the 2003 GMC Sierra and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
To locate components, see COMPONENT LOCATIONS . For circuit reference, see WIRING DIAGRAMS . For connector terminal identification, see CONNECTOR IDENTIFICATION . For intermittent conditions, see INTERMITTENT CONDITIONS . If testing requires component removal or replacement, see appropriate REMOVAL & INSTALLATION article.