B0871 Abarth 207 OBD Code

OBD/2 B0871 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 B0871 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.

B0871 Abarth 207 Error Code Repair Process :

If your pcm - idm communications error 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 B0871 and engine control unit are in charge of monitoring a bunch of different pcm - idm communications error, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Abarth 207 B0871 OBD2 Code

A common cause of code B0871 is the failure of PCM - IDM Communications Error, but there are several other possible causes as well, such as ;

EVAP canister or fuel tank leaks
Faulty Crankshaft Position Sensor (POS)
EVAP system hose leaking
Faulty Mass Air Flow (MAF) sensor

B0871 Abarth 207 OBD Code

B0871 Abarth 207 Error Code Repair Process :

Common Causes of Abarth 207 B0871 OBD2 Code

B0871 code for other Abarth cars