B1561 Bmw 520i OBD Code

OBD/2 B1561 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.

Circuit High Input codes like B1561 are mostly caused by defective alternators that develop excessive voltages, although there may be other causes as well, such as short circuits that 'leak' current into a particular system from other, unrelated systems that work on higher voltages. Note that in the case of short circuits that leak power into a control circuit, there is likely to be other, seemingly unrelated trouble codes present along with the code(s) being investigated. Diagnosing a 'high input' code will always involve a thorough testing of the charging system as a first step, followed by measures to isolate the system from all other possible sources of power during resistance, continuity, and reference voltage tests.

B1561 Bmw 520i Error Code Repair Process :

If your b1561 door lock cylinder circuit short to battery 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 B1561 and engine control unit are in charge of monitoring a bunch of different b1561 door lock cylinder circuit short to battery, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Bmw 520i B1561 OBD2 Code

A common cause of code B1561 is the failure of B1561 Door Lock Cylinder Circuit Short To Battery, but there are several other possible causes as well, such as ;

EVAP canister or fuel tank leaks
Erratic camshaft position due to low oil pressure
EVAP system hose leaking
Loss of ground.

B1561 Bmw 520i OBD Code

B1561 Bmw 520i Error Code Repair Process :

Common Causes of Bmw 520i B1561 OBD2 Code

B1561 code for other Bmw cars