U1940 Citroen 12 OBD Code

OBD/2 U1940 error code description and symptoms.

Throttle Position (TP) Sensor Intermittent The TP sensor circuit is monitored by the PCM for sudden TP rotation angle (or voltage) input change through the comprehensive component monitor (CCM). If during the last 80 warm-up cycles in key ON engine running the PCM detects a TP rotation angle (or voltage) changes beyond the minimum or maximum calibrated limit, a continuous diagnostic trouble code (DTC) is stored. Poor continuity through the TP sensor connectors Poor continuity through the TP harness Intermittent open or short inside the TP sensor While accessing the TP V PID on the scan tool, lightly tap on the TP sensor or wiggle the TP sensor connector and harness.

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.

U1940 Citroen 12 Error Code Repair Process :

The scent may U1940 signal oil or coolant leaking from their normally closed-loop systems, or it may indicate dangerous exhaust gases invading your car's interior. Car and truck exhaust contains toxic gases such U1940, so if the inside of your car seatbelt passenger pretensioner circuit short to ground as if you were standing behind your car, get out and get it fixed. Fight the urge to take a little nap first. So sleepy. That's the carbon monoxide talking, friends. At least open a window on your way to the shop.

Common Causes of Citroen 12 U1940 OBD2 Code

A common cause of code U1940 is the failure of Seatbelt Passenger Pretensioner Circuit Short to Ground, but there are several other possible causes as well, such as ;

Damaged VCT phaser
Engine Control Module (ECM)
Intake Valve Timing Control Solenoid Valve harness is open or shorted
Foreign matter caught in fuel filler cap

U1940 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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U1940 Citroen 12 OBD Code

U1940 Citroen 12 Error Code Repair Process :

Common Causes of Citroen 12 U1940 OBD2 Code

U1940 code for other Citroen cars