P3781 Trouble Code

View P3781 obd/2 error code description and symptoms. P3781 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.

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.

P3781 Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine P3781 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 air suspension rear height sensor low signal circuit short to battery 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 air suspension rear height sensor low signal circuit short to battery.

P3781 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.

Common Causes of P3781

A common cause of code P3781 is the failure of Air Suspension Rear Height Sensor Low Signal Circuit Short To Battery, but there are several other possible causes as well, such as ;

Failures of clutch motion/travel sensors.
Damaged camshaft position (CMP) sensor
Exhaust gas leaks
Erratic camshaft position due to low oil pressure

P3781 code for all cars

You can view according P3781 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+P3781 Geely Merrie

+P3781 Daihatsu Sirion

+P3781 Chevrolet Silverado 2

+P3781 Plymouth Duster

+P3781 Suzuki Hayabusa

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

About Us | Contact | Privacy