U1818 Trouble Code

View U1818 obd/2 error code description and symptoms. U1818 engine photo

Low Speed Fuel Pump Primary Circuit Malfunction The PCM monitors the low speed fuel pump (LFP) primary circuit output from the PCM.
The test fails if: When the LFP circuit is commanded on (grounded), excessive current draw is detected on the LFP circuit; or when the LFP circuit is commanded off, voltage is not detected on the LFP circuit (the PCM expects to detect VPWR voltage coming through the low speed fuel pump relay coil to the LFP circuit). Open or shorted low fuel pump (LFP) circuit Open VPWR to low speed fuel pump relay Damaged low speed fuel pump relay Damaged PCM An open circuit or short to ground can only be detected with the low speed fuel pump.

At this point we are assuming that the fuses and relays are good. You will need to locate the PCM/TCM and the power input signal circuit using your vehicle information source. Unplug the connector from the PCM/TCM, place the ignition switch in the ON position, and probe the appropriate circuit with the positive test lead of the DVOM.

U1818 Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine U1818 light should flash briefly, indicating that the OBD system is ready to scan your vehicle for any malfunctions. After this brief flash, the light should stay off while you drive as long as no problems are detected. If seat driver rear down circuit short to ground so, you'll be glad to know that your vehicle is equipped with an early warning system that could save you time, money, and fuel in addition to helping protect the seat driver rear down circuit short to ground.

U1818 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 U1818

A common cause of code U1818 is the failure of Seat Driver Rear Down Circuit Short To Ground, but there are several other possible causes as well, such as ;

EVAP canister or fuel tank leaks
Damaged VCT phaser
Faulty TCM or TCM programming
Improper ignition timing

U1818 code for all cars

You can view according U1818 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+U1818 Mercedes E 180

+U1818 Renault Maxity

+U1818 Subaru Impreza

+U1818 Adams 35

+U1818 Oldsmobile Custom Cruiser

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

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