P1937 Holden Caprice OBD Code

OBD/2 P1937 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 P1937. However, it is intended to flash the transmission control indicator lamp (TCIL) for first time VSS circuit error/malfunctions. Refer to possible causes for P1937

Some systems require that the actuator has an adequate supply of brake fluid. Low brake fluid levels can mimic the symptoms of code P1937, so consult the manual to locate the brake fluid reservoir. Bear in mind that a low fluid level can set code P1937 on some applications, so make sure that on fluid operated systems the fluid level is up to the mark before starting an electrical diagnosis.

P1937 Holden Caprice Error Code Repair Process :

If your knock sensor 2 circuit high input (bank 2) check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system P1937 and engine control unit are in charge of monitoring a bunch of different knock sensor 2 circuit high input (bank 2), and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Holden Caprice P1937 OBD2 Code

A common cause of code P1937 is the failure of Knock Sensor 2 Circuit High Input (Bank 2), but there are several other possible causes as well, such as ;

EVAP system hose leaking
Faulty Air fuel ratio (A/F) Sensor 1 Bank 1
Clogged or faulty fuel injector (s)
Camshaft advance mechanism binding (VCT unit)

P1937 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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P1937 Holden Caprice OBD Code

P1937 Holden Caprice Error Code Repair Process :

Common Causes of Holden Caprice P1937 OBD2 Code

P1937 code for other Holden cars