P1166

SAE VAG Description
P1166 17574 Bank 1, Long Term Fuel Trim, Range 2 Rich Limit Exceeded

Evaporative Emission (EVAP) Canister Purge Regulator Valve
Evaporative Emission (EVAP) canister purge regulator valve 1, checking Evaporative Emission (EVAP) Canister Purge Regulator Valve, Checking

Fuel injectors
Fuel injectors, checking Fuel Injectors, Checking

Fuel pressure regulator and residual pressure
Fuel pressure regulator and residual pressure, checking Fuel Pressure Regulator and Residual/Holding Pressure, Checking