Engine light on code p0457

Question

I have 2007 Chrysler aspen 4.7 v8
Engine light on code is P0157 all houses looks good what can be the problem

Answer 1

Hi there

This code is for a lose or missing fuel cap, but really it can mean there is a gross evap leak in the evap system. If the hoses are good and the fuel cap is good, you may have an issue with the vent control valve not closing or a problem with the pressure sensor reading wrong.

P0457 CHRYSLER - EVAP System Loose Fuel Cap

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