DTC P1921: Transmission Range Signal
WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, 2011 Ford Fusion, 2010 Mercury Milan, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
P1921 - TRANSMISSION RANGE SIGNAL
| Description: | The transaxle control module (TCM) continuously monitors the controller area network (CAN) for a transmission range message from the powertrain control module (PCM). This DTC sets when the received message does not match the actual transmission range. | ||
| Possible Causes: |
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| Diagnostic Aids: | Retrieve all continuous memory and on-demand self-test DTCs from the PCM. Repair any TR related DTCs first. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST TY . | ||