P2438 Rover 2600 OBD Code

OBD/2 P2438 error code description and symptoms.

Mass Air Flow (MAF) Sensor Intermittent The MAF sensor circuit is monitored by the PCM for sudden voltage (or air flow) input change through the comprehensive component monitor (CCM). If during the last 40 warm-up cycles in key ON engine running the PCM detects a voltage (or air flow) change beyond the minimum or maximum calibrated limit, a continuous memory diagnostic trouble code (DTC) is stored.

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.

P2438 Rover 2600 Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine P2438 light should flash briefly, indicating that the OBD system is ready to scan your vehicle for any malfunctions. After this brief flash, the light should stay off while you drive as long as no problems are detected. If p2438 secondary air injection system air flow/pressure sensor circuit high bank 2 so, you'll be glad to know that your vehicle is equipped with an early warning system that could save you time, money, and fuel in addition to helping protect the p2438 secondary air injection system air flow/pressure sensor circuit high bank 2.

Common Causes of Rover 2600 P2438 OBD2 Code

A common cause of code P2438 is the failure of P2438 Secondary Air Injection System Air Flow/Pressure Sensor Circuit High Bank 2, but there are several other possible causes as well, such as ;

Damaged camshaft position (CMP) sensor
Faulty spark plug (s)
Faulty spark plug (s)
Faulty starter motor

P2438 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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P2438 Rover 2600 OBD Code

P2438 Rover 2600 Error Code Repair Process :

Common Causes of Rover 2600 P2438 OBD2 Code

P2438 code for other Rover cars