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2012 Acura MDX Repair and Maintenance Costs

A guide to repairs, service, and maintenance costs for your 2012 Acura MDX

2012 Acura MDX Problems

Check Engine and D4 Lights Flashing

The Acura MDX may develop issues with the automatic transmission.

Rough shifting may occur, and the “D4” light and check engine may begin to blink. The check engine light will also illuminate, and OBD trouble codes P0700, P0730, P0740, P0780, P1768 and/or P1768 will be stored in the computer.

If the transmission shifts roughly, the failure is very likely mechanical failure of the transmission. If the transmission performs normally, a faulty sensor, or dirty transmission fluid may be the case.

In most cases, it is necessary to use professional diagnostic equipment to provide a diagnosis, and complete the repair.

The longevity of the transmission is dependent on strict adherence to the manufacturer's recommendation for ATF replacement intervals and procedure.

Shudder or Vibration While Driving at Speeds Between 35 and 40 MPH

A shudder or vibration may develop while driving at speeds between 35 and 40 MPH. Our technicians tell us this condition is commonly caused by a failed automatic transmission torque converter. It is recommend to replace the torque converter and install an updated powertrain control module (PCM) to correct this concern.

To review some comments from the RepairPal community regarding this issue, please click here>>

Check Engine Light for Running Rough and Difficulty Starting

The exhaust recirculation valve (EGR) on the 2002-2017 Acura MDX may fail, causing:

  • Illumination of the check engine light
  • OBD trouble codes P0401 and P1491
  • Rough idle
  • Reduced fuel economy
  • Engine vibrations
  • Hesitation or stalling
  • Long cranking before engine starts
  • Failure of state or federal smog tests
  • The EGR valve has open and closed positions, and opens or closes on command from the computer.

    Exhaust gases constantly pass through the valve when it is open, leaving carbon deposits on the valve. These carbon deposits may lead the the valve sticking in the open or closed position.

    To correct this issue, sometimes it is sufficient to clean the valve, but replacement is recommended in all cases.

    For further information on your vehicle's issue, try out our diagnostics tool here.

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    2012 Acura MDX Questions

    Trip computer comes up on screen. How do i get rid of this (1 answer)

    It pops up and then goes away.

    Just purchased a used 2012 MDX with 25,000 miles. 2 steering related questions: (1 answer)

    1) Steering noise at very low speeds, like when you take off from a stop sign and turn either right or left. There is a bit of a "whine" or "straining" noise. The Acura dealer I purchased this from basically told me I had to learn to live with it because there is no fix, whi...

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    2012 Acura MDX Recalls

    Potential Fuel Leak From Fuel Tank Area

    The vent shut float (VSF) valve case in the fuel tank assembly does not meet design specifications. As a result, fuel may leak from the fuel tank, increasing the risk of a fire. Dealers will inspect the VSF assembly date, and if necessary, replace the fuel tank assembly to correct this concern. The Honda recall numbers are S25 and S26.

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