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Roman, Technician
Category: Audi
Satisfied Customers: 556
Experience:  over 20 years vw audi and porsche technical repair
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Audi 2002: My audi a6 2002 1.8t has epc and engine lights on,

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My audi a6 2002 1.8t has epc and engine lights on, first when it was on its working temp, after changing maf sensor lights come on it 5-10min of working, engin goes 1500rpm? anny ideas?
Hello ,
Here to answer automotive questions and make you feel comfortable and become familiar with your product.

For this type of repair/diagnosis it will very helpful if you can get the module scanned and list the fault codes. If you need to go to autozone or pepboys they have low cost or free services.

Let me know when you have them and list them here for me to evaluate
Customer: replied 4 years ago.

Hi again,







16706/P0322/000802 - Engine Speed Sensor (G28): No Signal
Possible Symptoms
Engine shuts off
Engine doesn't start
Possible Causes
Engine Speed Sensor (G28) loose
Engine Speed Sensor (G28) faulty
16395/P0011/000017 - Bank 1: Camshaft A (Intake): Retard Setpoint not Reached (Over-Advanced)
Possible Symptoms
Power Loss
Possible Causes
Camshaft Adjustment Valve 1 (N205) faulty
Fuel Pump Relay (J17) faulty
Mechanical Timing not correct, including Chain and/or Belt timing
16622/P0238/000568 - Manifold Pressure/Boost Sensor (G31): Signal too High
Possible Symptoms
Malfunction Indicator Lamp (MIL) active
Possible Causes
Wiring/Connector(s) from/to Manifold Pressure/Boost Sensor (G31) faulty
Manifold Pressure/Boost Sensor (G31) faulty
Possible Solutions
Check Wiring/Connector(s) from/to Manifold Pressure/Boost Sensor (G31)
Check Manifold Pressure/Boost Sensor (G31)
16490/P0106/000262 - Manifold / Barometric Pressure Sensor (G71) / (F96): Implausible Signal
Possible Causes
Wiring and/or Connections from/to Manifold/Barometric Pressure Sensor (G71)/(F96) faulty
Leak in Air Intake and/or Exhaust
Manifold/Barometric Pressure Sensor (G71)/(F96) faulty
Engine Control Module faulty
This one you will want to check this sensor it is found in the turbo condenser intake pipe between the radiator and the coolant hose. D/S front of engine.
01314 - Engine Control Module: No Communications
Possible Causes
CAN-Databus Wiring/Connectors from/to Engine Control Module faulty
Fault(s) stored in Engine Control Module
Engine Control Module recently flashed or re-mapped
Possible Solutions
Check CAN-Databus Wiring/Connectors from/to Engine Control Module
Check Measuring Value Blocks (MVB)
 Usually Measuring Value Blocks (MVB) 125+ show the current Communication Status
To clear this Fault Code you will need to correct the Problem in the Engine Control Module first. Solve all other faults then you can clear tis one.
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