P1A9D Mitsubishi Rpm OBD Code

OBD/2 P1A9D error code description and symptoms.

Output Shaft Speed sensor circuit intermittent failure The output shaft speed sensor signal to the PCM is irregular or interrupted.
Harness connector not properly seated Harness intermittently shorted, or open Harness connector damaged OSS sensor damaged, or not installed properly Verify harness and connector integrity Verify OSS sensor proper installation.

One example of this would be when an automatic vehicle in placed in gear. To prevent the added drag from the torque converter and transmission from reducing the idling speed, the PCM will command the idle control valve to allow more air to enter the engine, while at the same time, adjusting the injector pulse width to inject more fuel to suit the increased amount of air. Note that the idle air control valve is closed by the PCM when the throttle plate is opened to prevent excess air from entering the engine.

P1A9D Mitsubishi Rpm Error Code Repair Process :

If your vehicle failed a P1A9D test and the P1A9D Check Engine Light is NOT on, chances are you have a problem with the OBDII system, a burned out MIL lamp, or a faulty catalytic converter. The converter is essentially an afterburner that cleans up the exhaust after it exits the engine. The OBDII system uses a ownstream oxygen sensor to monitor the efficiency of the converter, and it should detect a drop in converter efficiency if the converter has been contaminated or is failing (ignition misfiring, leaky exhaust valves, and oil burning can all damage the converter). What you want to look : Any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression. Use your OBD Express DIY to look at the oxygen sensor outputs, coolant temperature, airflow, calculated engine load, and inlet air temperature.

Common Causes of Mitsubishi Rpm P1A9D OBD2 Code

A common cause of code P1A9D is the failure of , but there are several other possible causes as well, such as ;

Camshaft Position Sensor harness is open or shorted
Clogged or faulty fuel injector (s)
Fuel injectors harness is open or shorted
Faulty Mass Air Flow (MAF) sensor

P1A9D is a kind of Powertrain Trouble Code

Powertrain of a modern automobile, comprising engine (with exhaust system), transmission, drive shaft, suspension and the wheels. In a motor vehicle, the term powertrain or powerplant describes the main components that generate power and deliver it to the road surface, water, or air.

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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P1A9D Mitsubishi Rpm OBD Code

P1A9D Mitsubishi Rpm Error Code Repair Process :

Common Causes of Mitsubishi Rpm P1A9D OBD2 Code

P1A9D code for other Mitsubishi cars