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2016 Mazda CX-5 Touring 2.5L MIL Lamp on
Posted to Asian Driveability on 1/10/2020 8 Replies

this suv came in with ck engine lamp on, code p0171 p0421 install a/f snsr per tsb 01-010/16 the light came back on p0171 only code. we had smoked system no leaks found, fuel pressure are good. the one thing that we keep seeing is ect 2 is -40 while ect 1 ...

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car Vehicle Data

2016 Mazda CX-5 Touring

VIN JM3KE2CY1G
Engine2.5 L / 4 cyl / GAS
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
P0421Catalytic Converter Efficiency (Bank 1)
Open Help Request

car Vehicle Data

2016 Mazda CX-5 Touring

VIN JM3KE2CY1G
Engine2.5 L / 4 cyl / GAS
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
P0421Catalytic Converter Efficiency (Bank 1)