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P1138 Diagnostic Trouble Code Discussion for September 2012

Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit High Voltage During Decel Fuel Cutoff

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Trouble Ticket Help Requests for DTC P1138
Help Request Posted
2005 Audi A8 Quattro L 4.2L MIL Lamp on VIN: WAUML44E55
P1138: lean. ... 2005 A8 L quatro with P0171 and P0174 lean on both banks,plus P1136 and P1138 also lean codes respectively During smoke test we noticed smoke pouring out of air injection secondary valve(according to Mitchels that's what it is)located on the back of the in...
September 13, 2012