U1866 Mercedes C 32 OBD Code

OBD/2 U1866 error code description and symptoms.

Engine Coolant Temperature (ECT) Circuit High Input Indicates the sensor signal is greater than Self-Test maximum. The ECT sensor maximum is 4.6 volts or -50 C (-58 F). Note on some vehicles that are not equipped with an ECT sensor, CHT can be used and can set this DTC. Open circuit in harness Sensor signal short to power Damaged PCM Improper harness connection Damaged sensor ECT V PID reading greater than 4.6 volts with key ON and engine OFF or during any engine operating mode indicates a hard fault.

Gear changes are accomplished by a command from the TCM to energize the clutch actuator to release the clutch; after which various actuators inside the transmission disengage the current gear, and depending on current operating conditions, engage the next higher or lower gear ratio. All of this happens much faster than a human driver could change gears, and in most applications, gear changes are as smooth and seamless as on any fully automatic transmission.

U1866 Mercedes C 32 Error Code Repair Process :

If your lamp tail output circuit short to ground 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 U1866 and engine control unit are in charge of monitoring a bunch of different lamp tail output circuit short to ground, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Mercedes C 32 U1866 OBD2 Code

A common cause of code U1866 is the failure of Lamp Tail Output Circuit Short To Ground, but there are several other possible causes as well, such as ;

Engine Control Module (ECM)
EVAP system hose leaking
Damaged VCT phaser
Spark plugs may be faulty

U1866 is a kind of Network Trouble Code

U-code indicates that engine communication errors and shows lost communication with engine parts.U-Codes are fairly straight forward, given all of the articles and technical publications that have been written regarding these problematic codes. In most cases, it just comes down to identifying the module that isn't communicating with the other modules on the CAN bus line for whatever reason.

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

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U1866 Mercedes C 32 OBD Code

U1866 Mercedes C 32 Error Code Repair Process :

Common Causes of Mercedes C 32 U1866 OBD2 Code

U1866 code for other Mercedes cars