My 2003 dodge ram 1500 shows dtc code P0420 can you tell me the problem

Question 1

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2003 Dodge Ram 1500 4.7. Need a vacuum diagram please?

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https://www.google.com/search?q=2003+Dodge+Ram+1500+4.7.+vacuum+diagram

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Feb 18, 2024 • 2003 Dodge Ram Pickup 1500

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Need to know if my 2000 Dodge Ram 1500 truck has to have the security relay hooked up cause there's not one?

The codes tell the issue

920 -921-999 error codes??????

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A P0500 code is a diagnostic trouble code (DTC) titled "Vehicle Speed Sensor (VSS) Malfunction." This code is triggered when the vehicle's Powertrain Control Module (PCM) or Engine Control Module (ECM) detects inaccurate speed readings or lack of a signal from the Vehicle Speed Sensor (VSS).

p0500 Code - Vehicle Speed Sensor "A" ' KBB

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Nov 09, 2023 • 2000 Dodge Ram 1500 Truck

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Where is the A.I.T sensor on a 2003 dodge 15005.7L 4wdquad cab

why ask, got DTC error for IAT>< sensor

AIT , no such thing.

IAT MEAN INTAKE AIR TEMP SENSOR.
IT IS ON THE MAIN AIR INDUCTION TUBE TO THE TB, THROTTLE BODY,
SOME CARS IT IS PART THE THE MAF SENSOR;.
why ask this, with no context or symptoms or scan results
the PCm will tell you it is bad if if is bad. scanned

2003 dodge RAM 1500???? this truck
service man SM
shows
The 2-wire Intake Manifold Air Temperature (IAT) sensor is installed in the intake manifold with the sensor element extending into the air stream.
or this sensors

Ambient Air temp ? the Inlet Air temp Sensor

no context told so no idea what;s wrong or up.

if DTC errors scanned, tell them first to put the helper on the same page.

Nov 04, 2022 • Dodge Cars & Trucks

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2005 Dodge Ram 1500 SLT 5.7l Hemi getting DTC codes P0325, P0330, P0340 and P0585 after replaceing the Camshaft Position sensor and Crankshaft position sensor

you need a proper scan tool and do a crankshaft camshaft corellation allignment.

Oct 12, 2016 • 2005 Dodge Ram 1500

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Whats a PO750 code on a 2007 dodge ram 1500 4.7

Be the first to answer Mar 12, 2012 • 2007 Dodge Ram 1500 Quad Cab Sport

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I have a code on my truck PO750 07 dodge ram 1500 4.7

Be the first to answer Mar 12, 2012 • 2007 Dodge Ram 1500 Quad Cab Sport

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I have a 03 dodge 1500 ram with the 4.7 it has code 172 i replace all plugs and the o2 sencer on bank 1, cleared all code but still 172 is on, and at 1500rpm the truck shutters, 2000rpm it goes away

There is no such Diagnostic Test Code (DTC) "172" for a 2003 Dodge Ram. Please see the solution I provided on your other posting for this same problem. http://www.fixya.com/cars/t11017617-03_dodge_code172

Dec 21, 2011 • Cars & Trucks

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2004 Dodge Ram P0420 code. What could be causing this? My emissions are clean (all were within limits), and I just replaced all 4 oxygen sensors

This code is set when the catalytic converters are operating below tolerable efficiency limits. Basically, your catalytic converters are bad and are in need of replacement. You can have bad converters and still pass emissions, but your computer uses the oxygen sensors to determine how well they are working. If the readings are out of a set tolerance, the check engine light will illuminate and DTC P0420 will set. Clearing the code will turn the light out temporarily, but the next time the test is run, the light will come on again.
Hope this helps.

Oct 20, 2010 • 2004 Dodge Ram 1500

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The codes p1596 and 0420 have appeard on my 2002 dodge ram 1500 quad cab and was needing assistance.

The P1596 is Speed Control Switch Always High and P0420 is Catalyst Efficiency Below Normal (Bank 1) and try taking the positive cable off battery for ten minutes and see if that doesn't help that way it will reset the computer and may just drop them codes.

Jun 02, 2009 • 2001 Dodge Ram 1500 Truck 2WD

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My 1997 Dodge pick up is showing "check Engine". OBDII reads code P0420 "Catalyst System Efficiency below threshold (bank 1). What is it and how do I fix this problem? Please help. Thanks! Joe

Most likely the catalitic convertor is clogged
Kurt

Mar 16, 2009 • 2008 Dodge Ram Pickup 1500

Question 2

hmlee390

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Posted on Jul 02, 2010

hmlee390

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PO420 code tells you the catalytic converter is not reaching the proper temperature .. that is measured by the back oxygen sensor (just behind the CAT ... make sure the heat shield is in place (in cold weather) .. you can check for a rattle in the cold CAT (thats bad) .. the rear O2 sensor can be bad or you could have a bad catalytic converter or one thats on it way to being bad .. there are some tests a mechanic can do .. 1. a back pressure test 2. measure the temperature of the CAT surface .. it should be around 225 deg F (after warmup) .. a non contact (IR) thermometer is handy for this .. make sure the pipe behind the CAT and the muffler are not leaking ..some "high flow rate " replacement mufflers will cause the trouble ..

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Anonymous

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The catalytic converter needs replaced

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My 2003 dodge ram 1500 shows dtc code P0420 can you tell me the problem

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2003 Dodge Ram 1500 4.7. Need a vacuum diagram please?

Need to know if my 2000 Dodge Ram 1500 truck has to have the security relay hooked up cause there's not one?

920 -921-999 error codes??????

p0500 Code - Vehicle Speed Sensor "A" ' KBB

Where is the A.I.T sensor on a 2003 dodge 15005.7L 4wdquad cab

2005 Dodge Ram 1500 SLT 5.7l Hemi getting DTC codes P0325, P0330, P0340 and P0585 after replaceing the Camshaft Position sensor and Crankshaft position sensor

Whats a PO750 code on a 2007 dodge ram 1500 4.7

I have a code on my truck PO750 07 dodge ram 1500 4.7

I have a 03 dodge 1500 ram with the 4.7 it has code 172 i replace all plugs and the o2 sencer on bank 1, cleared all code but still 172 is on, and at 1500rpm the truck shutters, 2000rpm it goes away

2004 Dodge Ram P0420 code. What could be causing this? My emissions are clean (all were within limits), and I just replaced all 4 oxygen sensors

The codes p1596 and 0420 have appeard on my 2002 dodge ram 1500 quad cab and was needing assistance.

My 1997 Dodge pick up is showing "check Engine". OBDII reads code P0420 "Catalyst System Efficiency below threshold (bank 1). What is it and how do I fix this problem? Please help. Thanks! Joe

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My 2003 dodge ram 1500 shows dtc code P0420 can you tell me the problem

2 Answers

hmlee390

Anonymous

Add Your Answer

Attachments: Added items

Related Questions:

2003 Dodge Ram 1500 4.7. Need a vacuum diagram please?

Need to know if my 2000 Dodge Ram 1500 truck has to have the security relay hooked up cause there's not one?

920 -921-999 error codes??????

p0500 Code - Vehicle Speed Sensor "A" ' KBB

Where is the A.I.T sensor on a 2003 dodge 15005.7L 4wdquad cab

2005 Dodge Ram 1500 SLT 5.7l Hemi getting DTC codes P0325, P0330, P0340 and P0585 after replaceing the Camshaft Position sensor and Crankshaft position sensor

Whats a PO750 code on a 2007 dodge ram 1500 4.7

I have a code on my truck PO750 07 dodge ram 1500 4.7

I have a 03 dodge 1500 ram with the 4.7 it has code 172 i replace all plugs and the o2 sencer on bank 1, cleared all code but still 172 is on, and at 1500rpm the truck shutters, 2000rpm it goes away

2004 Dodge Ram P0420 code. What could be causing this? My emissions are clean (all were within limits), and I just replaced all 4 oxygen sensors

The codes p1596 and 0420 have appeard on my 2002 dodge ram 1500 quad cab and was needing assistance.

My 1997 Dodge pick up is showing "check Engine". OBDII reads code P0420 "Catalyst System Efficiency below threshold (bank 1). What is it and how do I fix this problem? Please help. Thanks! Joe

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2003 Dodge Ram 1500 4.7. Need a vacuum diagram please?

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