DTC P1793: Ignition Supply Malfunction
WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2011 Mercury Milan, 2011 Mercury Mariner, 2011 Mercury Grand Marquis, 2011 Lincoln Town Car, and 2011 Lincoln Navigator L. However, it is still accessible from the selected car via links, so may be relevant.
P1793 - IGNITION SUPPLY MALFUNCTION
| Description: | The powertrain control module (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 . | ||