A4 Quattro Sedan V6-2.8L (ACK) (1997)
1
C2
3
C6
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If necessary, eliminate open or short in wiring.
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If wiring is OK and there is not at least 5 volts at the sensor harness connector:
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Replace ECM.
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Check wiring for continuity between harness connector and ECM.
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If necessary, eliminate open or short in wiring. If wiring is OK:
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Replace sensor for EVAP canister -G172-.