p0172, p0420, and p0340, 3 codes present on my 2002 Envoy. p0172 fuel too rich bank 1, p0420 catalyst efficiency low bank 1, and p0340 camshaft position sensor prob...what first? Track the p0340 first
...P0172 System too Rich - Bank 1. P0261 Injector Circuit Low - Cyl. 1. P0262 Injector Circuit High - Cyl. 1. P0264 Injector Circuit Low - Cyl. 2. P0265 Injector Circuit High - Cyl. 2. P0267 Injector ...
Question about Lexus GS 400
...P0172 System Too Rich (Bank #1) P0173 Fuel Trim Malfunction (Bank #2) P0174 System Too Lean (Bank #2) P0175 System Too Rich (Bank #2) P0176 Fuel Composition Sensor Circuit Malfunction P0177 Fuel ...
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