DTC P0691: Fan 1 Control Circuit Low
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.
P0691 - FAN 1 CONTROL CIRCUIT LOW
| Description: | This DTC sets when the powertrain control module (PCM) detects that the fan control (FC) circuit voltage is less than the desired voltage. | ||
| Possible Causes: |
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| Diagnostic Aids: | Check the wiring, connectors and FC relay for damage. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST KF . | ||