P3078 Trouble Code

View P3078 obd/2 error code description and symptoms. P3078 engine photo

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 P3078. However, it is intended to flash the transmission control indicator lamp (TCIL) for first time VSS circuit error/malfunctions. Refer to possible causes for P3078

Some systems require that the actuator has an adequate supply of brake fluid. Low brake fluid levels can mimic the symptoms of code P3078, so consult the manual to locate the brake fluid reservoir. Bear in mind that a low fluid level can set code P3078 on some applications, so make sure that on fluid operated systems the fluid level is up to the mark before starting an electrical diagnosis.

P3078 Error Code Repair Process :

OBD P3078 code and tailpipe testing are two different approaches to identify vehicles in need of repair. The OBD system looks for broken or malfunctioning emissions control components and bulb - outage condition detected, while tailpipe tests sample a vehicle's exhaust to see if it is above or below certain prescribed limits. Given the robust nature of today's emissions control components, it is entirely possible for an individual component to P3078 malfunction without leading to an immediate increase in emissions at the tailpipe. In such cases, other components (like the catalyst) can temporarily compensate for the part that is broken however, these other components can only do double duty for so long before they, too, begin to malfunction. In addition, OBD also monitors for P3078 and other malfunctions in the fuel system problems that traditional tailpipe tests were not designed to identify. Most state and local areas also include a gas cap pressure test as part of an emission inspection.

P3078 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 P3078

A common cause of code P3078 is the failure of Bulb - Outage Condition Detected, but there are several other possible causes as well, such as ;

EVAP system hose leaking
Faulty TCM or TCM programming
Erratic camshaft position due to low oil pressure
Ignition coils harness is open or shorted

P3078 code for all cars

You can view according P3078 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+P3078 Mercedes E 220

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

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