Categories: Auto Repair

Volkswagen Passat Flameout Suddenly And Can Not Start Engine

This post show a real auto repair case on Volkswagen Passat flameout trouble.A VW Passat owner called our technicians about the trouble his Passat flameout suddenly and can not start the engine again.

 

Related Content:

Volkswagen Passat Trouble Repair

Volkswagen Trouble Repair

 

 

Vehicle info:

Model: Volkswagen Passat

Year:2001

Mileage:about 240,000 miles

 

Trouble symptoms:

Flameout suddenly

Can not start the engine again

 

VW Passat Flameout Analysis & Dianosis:

Our technicians tested the Passat found that the engine can be start normally,but engine off when hand leaving the ignition key.And found the DTC 17978–Engine Start Blocked by Immobilizer.But there are not DTCs exit in the immobilizer system.

 

According to the vehicle testing resault,the fuel and ignition system trouble result in engine flameout can be ruled out,it most likely that the flameout trouble caused by ECU problem.

 

Firstly,technicians detected the power voltage of ignition,use multi-meter to measure the voltage of ignition coil when turning the igniiton,the voltage value is normal.

 

Next,technicians measured the voltage of injector,it showed only 8 volt,lower than normal value.But detected the wire harness between injector and ECU,all of them are normal.So technicians measured the voltage of :Hall sensor,oxygen sensor,crankshaft position sensor,all the voltage value of them are lower than normal value.

 

Further measurements revealed that the output voltage of the ignition was low,and the supply volate was normal only when the ignition was in the start position,which explains why the engine can only be start when starting.It means the ignition switch caused the engine flameout trouble.

 

Troubleshooting

Replace the ignition switch,then the VW Passat can be started correctly.

auto

Recent Posts

Doosan Excavator P0408 Maximum EGR Rate Governor Deviation Error Solution

This instruction show you guide on how to solve Doosan excavator P0408 maximum EGR rate…

2 days ago

How to Calibrate 2403 Steering Valve for Fendt 800 S4 Tractor

Here is the instruction show you guide on how to calibrate 2403 steering valve for…

4 days ago

Massey Ferguson Tractor Electrohydraulic Spool Valves Configuration

This function requires all connectors to be disconnected from all electrohydraulic valves on the tractor.You…

7 days ago

How to Remove Center Joint and Center Frame for HITACHI Hitachi EX5600-7B

This instruction show you guide on how to remove center joint and center frame for…

1 week ago

How to Repair Doosan Machine P0100 DTC Signal Error

How to solve Doosan heavy duty machine P0100 fault code signal error of air mass…

2 weeks ago

How to Solve Fendt 800 Vario S4 wayline Running Slow

If the vehicle is oscillating on the wayline or catches up the wayline very slowly…

3 weeks ago