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Acura Problems

RepairPal has identified the most common problems for 18 Acura models based on complaints from actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.

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95
Known Problems

The exhaust recirculation valve (EGR) on the 1996-2012 Acura RL 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.

    The 1998-2014 Acura TL V6 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.

    The fuel pump electrical relay sometimes stops working.

    The Airbag (SRS) warning light may illuminate due to one or more failed sensors. Our technicians recommend complete diagnoses of any stored fault codes because these sensors can be very expensive to replace.

    Automatic transmission problems are common and these transmissions have high failure rates.  Acura has voluntarily extended the warranty on many of its automatic transmissions, so be sure to check with an Acura dealership to confirm warranty coverage.

    Automatic Transmission May Fail Prematurely

    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.

    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>>

    The Acura 3.2CL 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.

    The hood may flutter or vibrate at freeway speeds. Acura has made a revised rear hood seal available which should eliminate this problem.

    A loud squealing noise on high mileage cars can be confused with a loose fan belt. The distributor should be inspected because it can seize, which can cause the timing belt to slip resulting in serious engine damage.

    Some automatic transmissions have a shifting problem that can be corrected by simply reprogramming the computer.

    A squeak type noise may be noted when raising or lowering the front door glass. Our technicians tell us that in most cases this issue can be corrected by replacing the door glass seal.

    The Acura TLX may have issues with the idle air control system, causing:

    The idle air bypass system is made up of vacuum lines, an idle air control valve (IACV), the throttle body, and intake manifold, and allows enough air into the engine to idle when the throttle body is closed. The OBD trouble code P0505 refers you to this system to inspect for failures.

    The most likely cause is a dirty or failed IACV, but vacuum lines, intake manifold gasket, throttle body gasket, and IACV gasket should be inspected.

    In all cases involving the IACV, the throttle body ports should be cleaned prior to installing the IACV onto the throttle body.

     

    The car will sometimes not start because of a problem with the ignition switch. Some models may have been recalled by Acura for this issue, please check with your dealer to be sure.