P0091 Trouble Code

View P0091 obd/2 error code description and symptoms. P0091 engine photo

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 P0091

In most cases, the TCM is integrated into a single housing with the PCM. Nevertheless, the section of the module which controls (automatic) transmission function may be powered up separately. In any case, the TCM is typically powered using switched (only present with the ignition switch in the ON, start, or run position) voltage. This circuit is normally equipped with a fuse, fusible link, and/or a relay. Frequently, the PCM and TCM are powered using the same relay albeit by separate circuits. Access to a reliable vehicle information source will yield necessary details of the TCM power circuit for the specific vehicle in question.

P0091 Error Code Repair Process :

The rule of P0091 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 p0091 fuel pressure regulator 1 control circuit low. Likewise, overriding the OBD P0091 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.

P0091 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 P0091

A common cause of code P0091 is the failure of P0091 Fuel Pressure Regulator 1 Control Circuit Low, but there are several other possible causes as well, such as ;

Continuous oil flow to the VCT piston chamber
Damaged camshaft position (CMP) sensor
Faulty oil control valve (OCV)
Variable Valve Timing (VVT) circuit is open or shorted

P0091 code for all cars

You can view according P0091 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+P0091 Datsun 100

+P0091 Leyland Marina

+P0091 Peugeot Bipper

+P0091 Dacia Dokker

+P0091 Skoda 1200

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

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