B0721 Trouble Code

View B0721 obd/2 error code description and symptoms. B0721 engine photo

Brake Switch Circuit Input Malfunction Indicates PCM did not receive a brake pedal position (BPP) input. Open or short in BPP circuit Open or short in stoplamp circuits Damaged PCM Malfunction in module(s) connected to BPP circuit. (Rear Electronic Module [REM] Windstar and LS6/LS8 or Lighting Control Module (LCM) Continental and Town Car. Damaged brake switch Misadjusted brake switch Check for proper function of stoplamps.

On some transmissions, such as automated manual transmissions or automatic transmissions with manual mode, the GSP switch lets the TCM know whether or not the driver has selected automatic or manual function. On manual transmissions, the GSP switch informs the TCM which gear the driver is selecting, and may function as a neutral safety switch, depending on system design. The TCM also uses the gate select position switch to monitor transmission operation. For example, if the driver selects manual mode and selects 3rd gear on an automatic transmission, the TCM may monitor speed sensors to detect clutch and brake slippage.

B0721 Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine B0721 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 a/c compressor temperature sensor malfunction 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 a/c compressor temperature sensor malfunction.

B0721 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.

Common Causes of B0721

A common cause of code B0721 is the failure of A/C Compressor Temperature Sensor Malfunction, but there are several other possible causes as well, such as ;

Failures of clutch motion/travel sensors.
Faulty Camshaft Position Sensor
Exhaust gas leaks
Clogged or faulty fuel injector (s)

B0721 code for all cars

You can view according B0721 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+B0721 Aston Martin Le Mans

+B0721 Subaru Rex

+B0721 Hudson Jet

+B0721 Chrysler Stratus

+B0721 Pontiac Executive

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