B3403 Bmw 3200 OBD Code

OBD/2 B3403 error code description and symptoms.

EGR Flow Insufficient Detected The EGR system is monitored during steady state driving conditions while the EGR is commanded on.
The test fails when the signal from the DPF EGR sensor indicates that EGR flow is less than the desired minimum. Vacuum supply EGR valve stuck closed EGR valve leaks vacuum EGR flow path restricted EGRVR circuit shorted to PWR VREF open to D.P.F. EGR sensor D.P.F. EGR sensor downstream hose off or plugged EGRVR circuit open to PCM VPWR open to EGRVR solenoid D.P.F. EGR sensor hoses both off D.P.F. EGR sensor hoses reversed Damaged EGR orifice tube Damaged EGRVR solenoid Damaged PCM Perform KOER self-test and look for DTC B3403 as an indication of a hard fault.

Circuit High Input codes like B3403 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.

B3403 Bmw 3200 Error Code Repair Process :

If your a/c cycling period too short 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 B3403 and engine control unit are in charge of monitoring a bunch of different a/c cycling period too short, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Bmw 3200 B3403 OBD2 Code

A common cause of code B3403 is the failure of A/C Cycling Period Too Short, but there are several other possible causes as well, such as ;

Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection
Faulty Crankshaft Position Sensor (POS)
Camshaft Position Sensor harness is open or shorted
Erratic camshaft position due to low oil pressure

B3403 Bmw 3200 OBD Code

B3403 Bmw 3200 Error Code Repair Process :

Common Causes of Bmw 3200 B3403 OBD2 Code

B3403 code for other Bmw cars