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Code po404 wont start

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I have a 2010 dodge grand caravan.replaced both 02 sensors and cat.now i have a code po138 and po404.what does that mean.


P0138 - Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2)

Fault codes never say to replace parts. They only indicate the circuit or system that needs further diagnosis. The only way to set this code is to have a break in the sensor's ground wire or the signal voltage wire is shorted to the 12 volt heater wire for that sensor. Start by looking for a corroded terminal in the sensor's connector or a terminal that got stretched or pushed out of the plug body. Next, check the wiring harness for signs of melted wires, especially where they travel near hot exhaust parts.

If you haven't found the cause by this time, use a scanner to view live data and look at the sensor's voltage compared to the passenger side sensor. If it's normal, you have an intermittent problem that isn't currently acting up. Try flexing on the wire harness to see if the voltage changes. If the voltage IS high, unplug connectors going to that sensor and wiggle harnesses until the voltage changes. That will help you narrow down the location of the problem.

Oct 17, 2016 | Dodge Grand Caravan Cars & Trucks

1 Answer

Fault code po403/po404


the 403 is a circuit which can be a wiring , sensor or egr connection os faulty
http://www.obd-codes.com/p0403 http://www.obd-codes.com/p0404

Jul 19, 2016 | Cars & Trucks

1 Answer

Had code po404 so changed the sensor, now code po406 is showing up and car idles extremely high. What is causing this and how to I fix it?


Opp's

OBD Codes have nothing to do with changing parts

Codes are Parameters that are out of range

You check for codes & use them to diagnose the
system that set them & component test to find a problem

So--- Google your codes & read up

TYPE: OBD PO404
OBD PO406

Your going to need a shop to find the issue

Nov 05, 2014 | 1999 Chrysler LHS

1 Answer

What do all these codes mean PO135-PO300-PO404-PO102-PO440


po135 is o2 sencer on drivers side. will be the first one. po300 is random/multiple misfire.po404 is a egr code. po102 mass air flow circuit low input. po440 evap emission control system malfunction

Dec 23, 2012 | Cars & Trucks

1 Answer

What will be wrong if I got code p0406 and p 404


both codes po406 and po404 refer to a fault in the EGR system
Po404 > Exhaust Gas Recirculation Circuit Range/Performance not within proper range.
Po406> Exhaust Gas Recirculation Sensor A Circuit High (meaning the circuit is open or disconnected)
Without actualy checking the voltages (wiring)
Replace the EGR valve
clear codes
test drive

Sep 07, 2010 | 2005 Dodge Caravan

1 Answer

Engine light came on and used my scanner and it came up with the code number of PO404.


po404 is telling the computer that the egr pintle is openwhen it shouldnt be, this sounds like a bad egr valve or carbon is holding it open, remove the valve and check for carbon, this is common on the 4.3 engine, if its carbon then run and rev engine with valve off, then reinstall valve and replace the gasket with an aftermarket gasket that was made for this problem, the new gasket has a screen to stop carbon from going into valve, here a picture of it.hope this is helpful.ab6f9e9.jpg974a1ec.jpg

Jun 14, 2010 | 1999 Chevrolet Astro

1 Answer

I have a 98 grand prix had a friend put it on the computer these r the codes that came in order PO141-PO305-PO404-PO141pd? Can some one please explain what these mean and how do I fix the problem?


go to autozone and have them code check the numbers for you they will give the info from the codes for free if you ask them the wont tell how to fix it but codes will be explained on the print out and its free service

May 06, 2010 | 1998 Pontiac Grand Prix

2 Answers

What is code po404?


Definition Exhaust Gas Recirculation "A" Control Circuit Range/Performance

Mar 10, 2010 | 2000 Chevrolet Impala

2 Answers

1998 chevy malibu turned car off at gas station want start back


sounds like an antitheft system malfunction - check to see if light stays on after you remove the key

Jan 09, 2009 | 1998 Chevrolet Malibu

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