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.
Some systems require that the actuator has an adequate supply of brake fluid. Low brake fluid levels can mimic the symptoms of code U0031, so consult the manual to locate the brake fluid reservoir. Bear in mind that a low fluid level can set code U0031 on some applications, so make sure that on fluid operated systems the fluid level is up to the mark before starting an electrical diagnosis.
Difficulty Level (Soso)
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Repair Time (50 Min.)
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| Cost Prediction : $ 40-75 |
If your scp (j1850) invalid or missing data for suspension 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 U0031 and engine control unit are in charge of monitoring a bunch of different scp (j1850) invalid or missing data for suspension, and if they get a reading that's a little out of whack, up pops the check engine light.
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U0031 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. |
You can view according U0031 DTC for your car model. We selected several models to see obd2 solutions click and view it.
| +U0031 Simca 2 Litres | +U0031 Edsel Villager | +U0031 Opel Tigra A | +U0031 Sunbeam 14 | +U0031 Plymouth Vip |
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