DTC P0726: Engine Speed Input Circuit Range/Performance
WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
P0726 - ENGINE SPEED INPUT CIRCUIT RANGE/PERFORMANCE
| Description: | The transaxle control module (TCM) calculates an engine speed and compares it to the engine speed received from the PCM. This DTC is set when the RPM difference between the calculated and received speeds is greater than 1,000 RPM. | ||
| Possible Causes: |
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| Diagnostic Aids: | The TCM PID ENGCTO displays the RPM that the TCM received. The TCM PID RPM displays the RPM that the TCM calculated. Both PIDs should match actual engine speed. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | - | - | GO to Pinpoint Test QE . |