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Whether this is causing your battery to drain isn't clear - there are other causes of batteries discharging, such as burnt out diodes in the alternator.
Treat it as 3 faults - try and rectify the 2 error codes first (disconnect the car battery whe not in use to prevent it draining) .. and then look at the cause of the battery discharge
: ( Dealer has the tools to properly diagnose these combinations of problems. Concern for the catalytic converter damage when operating under non normal closed loop operation.
The OBDII will try to protect the engine and driver by reverting to the limp home mode. Driving extended distance not recommended.
Dealer specific Chrysler analysis tools can pin point the problem allowing for problem resolution.
If car does not stay runnin or stalls wen slowin down is egr effects. It may be the gasket wher it connects to engine. Sonetimes u can blow out carbon in the valve itself. Seek a shopmanual at local library
code p0404 refers to exhaust gas recirculation (EGR) valve position--range/performance problem ===causes --hose leakage/blockage--wiring ---EGR valve/solenoid
code p0420 refers to cat converter system bank 1-efficiency below threshold===causes --cat converter---wiring---HO2S 2
The P0404 is EGR Position Sensor Performance. Changing the EGR should
solve the problem. The labor time guide only calls for .7hrs to change,
so it shouldn't be a problem to do this yourself. And the EGR should be
able to be obtained from any local parts store (i suggest a better
quality part store like NAPA as opposed to AutoZone)
its basically saying change your egr valve plus to make sure i would clean ur intake passages thats where the egr goes to and if the passages get gloged then the egr valve can go bad please update the situation if eny so i can help u
you most likely have a p0404 dtc for egr valve if you go to autozone they will scan it for free if this is the case then replace the egr valve what happens is it sticks open causing an internal vacuum leak stalling out the engine.
The 420 will not go away with egr replacement. it means the computer has detected a problem with the catalytic converter. eGR valve is at the rear of the engine. Not easy to get to on vans.
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