C0666 Trouble Code

View C0666 obd/2 error code description and symptoms. C0666 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 C0666

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.

C0666 Error Code Repair Process :

The rule of C0666 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 seat switch reference voltage negative common open circuit. Likewise, overriding the OBD C0666 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.

C0666 is a kind of Chassis Trouble Code

Diagnosing chassis noises can be one of the most frustrating problems technicians face. Fortunately, manufacturers have engineered noise, vibration and harshness (NVH) diagnostic techniques and equipment to find the source of the noise.

Common Causes of C0666

A common cause of code C0666 is the failure of Seat Switch Reference Voltage Negative Common Open Circuit, but there are several other possible causes as well, such as ;

Continuous oil flow to the VCT piston chamber
Faulty ignition coil (s)
Fuel injector leaks
Oil flow restriction in the oil passages or the VCT valve body

C0666 code for all cars

You can view according C0666 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+C0666 Ferrari 225

+C0666 Chiribiri Chiribiri

+C0666 Ford Gt

+C0666 Studebaker Commander

+C0666 Subaru G3x Justy

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

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