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Symptom List: P0725-ENGINE SPEED SENSOR DYN. PLAUSIBILITY Test Note: All symptoms listed above are diagnosed using the same tests. The title for the tests will be P0725-ENGINE SPEED SENSOR When Monitored and Set Condition: P0725-ENGINE SPEED SENSOR DYN. PLAUSIBILITY When Monitored: The engine speed is above 790 RPM. Set Condition: The ECM detects a change in engine speed that has occurred more rapidly than the engine is capable of changing speed. P0725-ENGINE SPEED SENSOR STATIC PLAUSIBILITY When Monitored: With the engine speed above 700 RPM. Set Condition: The engine speed sensor signal indicates engine speed below 75 RPM and the needle movement sensor signal (injector #1) indicates engine speed above 700 RPM. POSSIBLE CAUSES ENGINE CONTROL MODULE INTERMITTENT CONDITION ENGINE SPEED SENSOR SIGNAL CIRCUIT SHORTED TO GROUND ENGINE SPEED SENSOR CIRCUITS SHORTED TOGETHER ENGINE SPEED SENSOR SIGNAL CIRCUIT OPEN ENGINE SPEED SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE ENGINE SPEED SENSOR TEST ACTION APPLICABILITY 1 Attempt to start the engine. All Yes → No → 84 DRIVEABILITY - DIESEL |