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P0016 Engine Speed Signal Mismatch (Diesel)

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Mopar1973Man

By Mopar1973Man

P0016 ENGINE SPEED SIGNAL MISMATCH (DIESEL)

When Monitored and Set Condition

When Monitored: While Engine is running.
Set Condition: When the engine speed detected by the Engine Position Sensor (cam) and the Engine Speed
Sensor (crank) differ by a specified RPM amount.

POSSIBLE CAUSES

  • DAMAGE TO THE ESS OR EPS
  • MECHANICAL MISALIGNMENT OF THE ESS OR EPS
  • MECHANICAL MISALIGNMENT OF THE CAMSHAFT AND CRANKSHAFT GEARS
  • INTERMITTENT CONDITION

DIAGNOSTIC PROCEDURE

NOTE: Refer to VERIFICATION TESTS for appropriate verification test procedures.

  1. Visually inspect the condition of the tone wheel, ESS, and EPS for damage.  Are any of the components damaged?
    Yes --> Repair or replace any damaged component. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).
    No --> Go To 2
  2. Verify the speed indicator ring is properly positioned relative to the locating pin in the front face of the crankshaft. Is the speed indicator ring properly installed?
    Yes --> Go To 3
    No --> Repair the speed ring indicator ring installation. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).
  3. Check the mechanical alignment of the camshaft gear to the crankshaft gear. Refer to service information for assistance. Are the gear teeth in proper alignment?
    Yes --> Refer to the SYMPTOM: INTERMITTENT CONDITION Symptom (Diagnostic Procedure). Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).
    No --> Repair the gear alignment. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).

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