Volkswagen Cars 2000-05

2.0L L4 VIN A Auto 13

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Trouble Code: P2252



O2 Sensor Negative Voltage Circuit Low Bank 1 Sensor 1

Possible Causes:



Oxygen sensor (before catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (behind catalytic converter) is faulty
 
O2S circuit is open or shorted in the wiring harness
 
ECM has failed
 

Trouble Code: P2253



O2 Sensor Negative Voltage Circuit High Bank 1 Sensor 1

Possible Causes:



Oxygen sensor (before catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (behind catalytic converter) is faulty
 
O2S circuit is open or shorted in the wiring harness
 
ECM has failed
 

Trouble Code: P2413



Exhaust Gas Recirculation System Performance

Possible Causes:



EGR Vacuum Regulator Solenoid Valve is faulty
 
EGR valve is malfunctioning
 
Circuit wires have short circuited to each other, to ground or to power
 
Potentiometer for EGR has failed
 

 
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