DTC P1793: Ignition Supply Malfunction
WARNING: This page does not describe the selected car, but rather 25 other vehicles, including the 2012 Lincoln Navigator L, 2012 Lincoln Navigator, 2012 Lincoln MKZ, 2012 Lincoln MKX, and 2012 Lincoln MKT. However, it is still accessible from the selected car via links, so may be relevant.
P1793 - IGNITION SUPPLY MALFUNCTION
| Description: The PCM monitors the ignition switch position run (ISP-R) circuit. This DTC sets if the voltage drops below 7 volts or rises above 16 volts. | |||
Possible Causes:
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| Diagnostic Aids: | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST B . | ||