2011 Acura MDX Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2011 Acura MDX

2011 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.

Debris in transmission due to failed torque converter clutch
The clutch in the torque converter can fail, allowing debris to circulate throughout the automatic transmission.
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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    2011 Acura MDX Questions

    while getting oil change at acura,the mgr wanted to align my rear tires. (1 answer)

    my acura is 2011mdx/18000 miles. he said rear tires were "feathering". is this a common problem on mdx?

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