P1517 - FAULT CODE - OBD2

POST UPDATED IN February, 2023

P1517 Code failures by brands

P1517 FORD, LINCOLN, MAZDA, MERCURY: INTAKE MANIFOLD RUNNER CONTROL INPUT ERROR BANK 2

Description of DTC code P1517

The IMRC (Intake Manifold Runner Control) is an electrically operated system, which consists of a motorized actuator with one attachment link for each housing on each bank. The linkage is connected to the housing butterfly plate levers.

Each IMRC housing is an aluminum casting with two inlet air passages for each cylinder. One passage is always open, and the other one is operated by the butterfly valve lever, which opens and closes it. The housing has a return spring which keeps the plates closed.

The motorized actuator houses internal switches that provide feedback to the PCM (Powertrain Control Module), which indicates the position of the linkage and plates. Below 3000 rpm, the vacuum solenoid is activated to allow the vacuum to be applied to the manifold so that the throttle valve plates are shut down. Above 300 rpm the solenoid is de-energized, allowing vacuum to be vented from the actuator and the valve plates to open.

P1517 OBDII fault code is set when the Intake Manifold Runner Control input signal is outside a calibrated range.

Symptoms of fault code P1517

  • Check Engine lamp comes on.
  • Problems during acceleration.
  • Increased fuel consumption.

Causes of OBD2 P1517

The reasons for storing the P1517 OBD2 diagnostic code are:

  • The Intake Manifold Runner Control actuator may have damage to its wires or connectors.
  • The IMRC actuator may be in poor condition.
  • The Powertrain Control Module may be damaged.

Possible solutions of the DTC code P1517

The steps to follow to solve the DTC P1517 OBDII code are as follows:

  • Consult the Technical Service Bulletins.
  • Verify that there is no damage to the wires and connectors of the Intake Manifold Runner Control actuator circuit. If you discover common deficiencies due to burns, corrosion, or wear, make the appropriate repairs.
  • Using the appropriate tools, check for proper reference circuits, ground signals, and power supply voltages. If a deficient reading is found, make the corresponding repairs.
  • Following the recommendations given by the manufacturer, check the integrity of the IMRC If these tests detect damage to the actuator, consider replacing the actuator.

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