B2859 Ford F-350 OBD Code

OBD/2 B2859 error code description and symptoms.

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.

To check for an open circuit, trace along the length of the transmission control circuit, checking for breaks in the wiring. Repair any broken wiring and make sure all connectors are fully seated and locked.Pay close attention to connectors, looking for corrosion, bent or broken pins, or moisture in the connector. Repair any connector issues even if they are not specifically part of the transmission control circuit as they may serve a function in providing power to the transmission control circuit.

B2859 Ford F-350 Error Code Repair Process :

If your ignition coil h primary/secondary circuit malfunction 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 B2859 and engine control unit are in charge of monitoring a bunch of different ignition coil h primary/secondary circuit malfunction, and if they get a reading that's a little out of whack, up pops the check engine light.

Difficulty Level (Soso)
Level
Repair Time (50 Min.)
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Cost Prediction : $ 40-75

Common Causes of Ford F-350 B2859 OBD2 Code

A common cause of code B2859 is the failure of Ignition Coil H Primary/Secondary Circuit Malfunction, but there are several other possible causes as well, such as ;
Wrench Tool B2859 is a kind of Body Trouble Code

Auto body problems aren't always easy to spot. Diagnosing auto body problems sometimes requires a little know-how. In this section you'll find articles dedicated to teaching you how to diagnose auto body problems.

B2859 code for other Ford cars

You can view according B2859 DTC for your car model. We selected several models to see obd2 solutions click and view it.

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

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