The inspection and maintenance monitors (IM monitors) will not be reset and most all onboard computers hooked to the DLC will be able to detect that the powertrain control module is not "ready." As a result, the vehicle will fail emissions testing until the powertrain control module is in its "ready" mode, and, once it is, if the repair hasn't been made, it will retrigger the DLC and the vehicle will still fail. Resetting the check engine light will not allow the MPV to sneak through state inspections that require emissions testing even if not illuminated on the dash. Failure to fix the problem can lead to severe engine or transmission damage or compromise components in the emissions system. ABS Module Replacement AC Line Replacement. In other cases, the light will come back on after the powertrain control module has relearned and recommunicated with the sensors and modules connected to it. Pricing for all 1998 MAZDA Protege Repairs & Services. In addition, if the triggered DTC is a hard code, the check engine light will re-illuminate almost immediately. Simply resetting the light is not fixing the problem and in some cases, the check engine light will come back on. Resetting the check engine light in the Mazda MPV should only be performed after the DTC has been properly diagnosed and the repair has been made to resolve the problem that triggered the DTC.If you are unsure about what your diagnostic trouble codes mean after finding the Protege OBD port location and scanning the codes have your Protege diagnosed by a professional automotive technician. Flashing Check Engine Light: If your check engine light is flashing, stop driving your Protege and have it towed to your nearest mechanic – a blinking check engine light means you probably have a very serious problem with your car and you risk ruining your engine by driving it. Steady Check Engine Light: If your check engine light is on every time you operate your Protege, you need to have it checked as soon as possible, especially if you notice performance problems or unusual noises. For example, does it happen when you accelerating, driving on the highway or does it appear at low speeds? This will help your mechanic evaluate the issue. Check engine light flashes, and the traction control light comes on. Turn on the ignition but do not start the engine. Locate the OBD-II port under the dashboard. If there are fuel trim problems, fix them first and then continue. Monitor the fuel trim to verify that there are no fuel mixture problems that may cause the catalytic converter to be inefficient. Is it OK to drive with a check engine light on? Intermittent Check Engine Light: If the check engine light on your 2002 Protege is not steady, try to take note of the conditions when this happens. Symptoms What you may notice when your Mazda check engine light comes on: Engine runs rough The car won’t respond to the accelerator pedal. Reading the Diagnostic Trouble Codes (DTCs) with an OBD-II scanner would be the next step to finding the fault codes that triggered the check engine light to stay on. Let the engine idle warm up then drive the vehicle at a highway cruising speed. The video above shows how to locate the on board diagnostics OBD plug location on your 2002 Protege, how to read the trouble codes and how to reset or clear the check engine light using a scanner on your Protege. Whereas a steady check engine light may mean you merely need to tighten you gas cap next time you stop in order to reset the service engine soon light. If you have a flashing check engine light, turn off the engine immediately to prevent potential motor damage. A check engine light can indicate a broad spectrum of problems with your 2002 Mazda Protege.
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