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2009 Dodge Journey 3.5L V6 - OBD2 Codes P0171 and P0174: Intake Leak Diagnosis?

Model: 2009 dodge journey 3.5 v6 Fault Code: P0171 Posted: 2017-03-05 07:57

I own a 2009 Dodge Journey with a 3.5L V6 engine. Previously, I received an oxygen sensor fault code. As part of routine maintenance, I replaced the spark plugs and the rear O2 sensor (accessing the upper intake manifold requires removing the intake half). After these changes, my vehicle now displays diagnostic trouble codes P0171 and P0174. Based on this, am I correct in assuming that there is an intake system leak? What steps should I take to verify or resolve this issue?

Related fault codes
P0171
Comments (1)
Anonymous 2017-03-05 08:40

Run the engine with water sprayed around or onto the intake manifold. Any air leaks will cause visible bubbles, indicating a breach in the intake system.