B0021 Plymouth Barracuda OBD Code

OBD/2 B0021 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 B0021. However, it is intended to flash the transmission control indicator lamp (TCIL) for first time VSS circuit error/malfunctions. Refer to possible causes for B0021

As the engine heats up and combustion becomes easier and more complete, the PCM will command the idling control valve to increase the amount of air entering the engine to suit the changing conditions. However, when the load on the engine changes, say, when some electrical consumers or other systems are either turned on or off, the PCM adapts the signal voltage to the idle control valve to ensure that the idling speed remains stable, and at the RPM specified by the manufacturer.

B0021 Plymouth Barracuda Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine B0021 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 throttle position sensor/switch a circuit range/performance problem 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 throttle position sensor/switch a circuit range/performance problem.

Common Causes of Plymouth Barracuda B0021 OBD2 Code

A common cause of code B0021 is the failure of Throttle Position Sensor/Switch A Circuit Range/Performance Problem, but there are several other possible causes as well, such as ;

EVAP system hose leaking
Faulty TCM or TCM programming
Damaged camshaft position (CMP) sensor
Erratic camshaft position due to low oil pressure

B0021 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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B0021 Plymouth Barracuda OBD Code

B0021 Plymouth Barracuda Error Code Repair Process :

Common Causes of Plymouth Barracuda B0021 OBD2 Code

B0021 code for other Plymouth cars