P0691 - Fan 1 Control Circuit Low
WARNING: This page is about a different car, the 2008 Ford Pickup, 2008 Ford F550 Super Duty, 2008 Ford F450 Super Duty, and 2008 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
P0691 - FAN 1 CONTROL CIRCUIT LOW
| Description: | The powertrain control module (PCM) monitors the fan control variable (FCV) circuit for an electrical concern. This DTC is set when the PCM detects a short to ground condition on the FCV circuit. | |||
| Possible Causes: |
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| Diagnostic Aids: | Check the FCV circuit for a short to ground. | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory | |
| All | refer to PINPOINT TEST AH . | |||