How to fix fault codes P1128 and P1130 on Audi S4. The long format of these codes is 17536 and 17538 fuel trim bank 1 and 2. This engine is the same for Audi A6 and A8 with engine code BFM, Audi A6 Allroad engine code BAS, Audi S4 engine code BBK years 2003-09, Audi S4 engine code BHF 2003 to 2009, and Volkswagen Phaeton with engine codes BGH, BGJ.
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