B0312 Mazda B4000 OBD Code

OBD/2 B0312 error code description and symptoms.

Vehicle Speed Sensor (VSS) Intermittent Indicates the powertrain control module (PCM) detected an error in the vehicle speed information. Vehicle speed data is received from either the vehicle speed sensor (VSS), transfer case speed sensor (TCSS), anti-lock brake system (ABS) control module, generic electronic module (GEM), or central timer module (CTM). This DTC is set the same way as B0312. However, it is intended to flash the transmission control indicator lamp (TCIL) for first time VSS circuit error/malfunctions. Refer to possible causes for B0312

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.

B0312 Mazda B4000 Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine B0312 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 pcm processor fault 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 pcm processor fault.

Common Causes of Mazda B4000 B0312 OBD2 Code

A common cause of code B0312 is the failure of PCM Processor Fault, but there are several other possible causes as well, such as ;

EVAP system hose leaking
Damaged ECM
Faulty variable valve timing (VVT)
Open circuits caused by damage to wiring.

B0312 is a kind of Body Trouble Code

Auto body problems aren't always easy to spot. Diagnosing auto body problems sometimes requires a little know-how. In this section you'll find articles dedicated to teaching you how to diagnose auto body problems.

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

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B0312 Mazda B4000 OBD Code

B0312 Mazda B4000 Error Code Repair Process :

Common Causes of Mazda B4000 B0312 OBD2 Code

B0312 code for other Mazda cars