U1109 Trouble Code

View U1109 obd/2 error code description and symptoms. U1109 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 U1109

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.

U1109 Error Code Repair Process :

The rule of U1109 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 u1109 scp (j1850) invalid or missing data for electric traction drive (inverter). Likewise, overriding the OBD U1109 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.

U1109 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.

Common Causes of U1109

A common cause of code U1109 is the failure of U1109 SCP (J1850) Invalid or Missing Data for Electric Traction Drive (Inverter), but there are several other possible causes as well, such as ;

Continuous oil flow to the VCT piston chamber
Air fuel ratio (A/F) Sensor 1 Bank 1 harness is open or shorted
Damaged VCT phaser
Fuel injector leaks

U1109 code for all cars

You can view according U1109 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+U1109 Ds Ds 4

+U1109 Packard Patrician

+U1109 Mahindra Goa

+U1109 Mitsubishi Eclipse Iii

+U1109 Tvr 3000

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