B2178 Renault Scenic 2 OBD Code

OBD/2 B2178 error code description and symptoms.

The Transmission Fluid Pressure Switch allows the engine's control module (PCM) or Transmission Control Module (TCM) to use hydraulic fluid to engage the clutches in the transmission to allow for smoother shifting while driving. If the PCM or TCM detects an issue with the hydraulic clutch or the pressure switch, the PCM or TCM will set code B2178

One example of this would be when an automatic vehicle in placed in gear. To prevent the added drag from the torque converter and transmission from reducing the idling speed, the PCM will command the idle control valve to allow more air to enter the engine, while at the same time, adjusting the injector pulse width to inject more fuel to suit the increased amount of air. Note that the idle air control valve is closed by the PCM when the throttle plate is opened to prevent excess air from entering the engine.

B2178 Renault Scenic 2 Error Code Repair Process :

The rule of B2178 code when it comes to emissions-related vehicle repair is that any modification that changes the vehicle from a certified configuration to a non-certified configuration is considered tampering: this applies to both vehicle owners and repair facilities and is, therefore, a Federal offense. Replacing a catalyst with a straight pipe is one traditional example of b2178 window driver rear remote down switch short to battery. Likewise, overriding the OBD B2178 error in system through the use of high-tech defeat devices or non-certified computer chips, for example, would also be considered tampering. The OBD system may, however, be repaired back to its original certified configuration with certified performance chips or appropriate aftermarket parts.

Common Causes of Renault Scenic 2 B2178 OBD2 Code

A common cause of code B2178 is the failure of B2178 Window Driver Rear Remote Down Switch Short to Battery, but there are several other possible causes as well, such as ;

Continuous oil flow to the VCT piston chamber
Faulty Fuel injector
Ignition coils circuit poor electrical connection
Faulty Variable Camshaft Timing (VCT) position solenoid

B2178 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.

About Us | Contact | Privacy

B2178 Renault Scenic 2 OBD Code

B2178 Renault Scenic 2 Error Code Repair Process :

Common Causes of Renault Scenic 2 B2178 OBD2 Code

B2178 code for other Renault cars