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Codes P0456, P0420 and p219b, problems with accelerating and at idle?

Tiny
OLIVERERIC423
  • MEMBER
  • 2013 DODGE GRAND CARAVAN
  • 2WD
  • AUTOMATIC
  • 156,000 MILES
We've had multiple problems since getting the car. Nobody seems to know what is going on. I've had multiple misfires (p0302, p0304, and p0306). I've also gotten the codes p0456, p0420, and p219b. I've had multiple people tell me what they think the problem is but today I ran a code reader on it today and got the following.

DTCFRZF - P0304
FUELSYS1 - 0L
FUELSYS2 - 0L
LOAD_PCI - 46.7
ETC - 63
SHRTFT1 - 0.0
LONGFT1 - -0.8
SHRTFT2 - 0.2
LONGFT2 - 0.0
MAP(inHg) - 15.4
RPM(/min) - 1330
VSS(mph) - 0
SPARKADV - 5
IAT - 66
TP - 16.5
RUNTM - 10
EVAP_PCT - 0.0
FLI - 85.9
EVAP_VP(inH20) - -2.015
BAR0(inHg) - 28.1
VPWR - 14.067
LOAD_ABS - 40.4
EQ_RAT - 0.999
TP_R - 6.3
AAT - 66
TP_B - 16.1
APP_D - 8.2
APP_E - 4.3
TAC_PCT - 6.3


I'm not very smart when it comes to mechanical issues, so I don't understand any of this. If anyone has any recommendations or suggestions, please let me know. Thanks.
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Saturday, September 17th, 2022 AT 9:01 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
Hi,

The first thing I noticed is that all misfires are on the same side of the engine. As far as the codes are concerned, the P0420 indicates an issue with the catalytic converter. The P0456 is a small evap leak. The P219B is one of interest. That indicates there is an imbalance in the air/fuel ratio on bank two, which is the side of the engine that has all the misfires (P0302, P0304, and P0306).

The imbalance can be caused by several things. For example, an exhaust leak on bank 2, a faulty fuel injector or injectors, an intake vacuum leak on one or more of the identified cylinders, engine compression, and the list goes on. See pic 1 below for a full list.

When the engine is running, have you ever noticed a slight exhaust or ticking from under the hood? Also, are you comfortable performing tests at home if I provide the directions?

Let me know.

Take care,

Joe

See pic below.
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Saturday, September 17th, 2022 AT 11:00 PM
Tiny
OLIVERERIC423
  • MEMBER
  • 19 POSTS
We heard a ticking sound, not very loud but enough to be heard. I'm absolutely comfortable to do tests that may help me figure out what's wrong.
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Saturday, September 17th, 2022 AT 11:14 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
Hi,

Okay, first, with the engine running, open the hood and see if you can tell if the ticking could be coming from an exhaust manifold. There is one on both sides of the engine. If the ticking is loud enough to record, do so and upload it for me to hear. Also, if you rev the engine, see if it gets louder. (Quick snaps of throttle)

Also, I need you to test fuel pressure. The pressure itself isn't my concern. However, how quickly the pressure drops is what I want to focus on. If it drops too fast, it could indicate a leaking fuel injector. So, we are focusing on a leak-down test. The pressure shouldn't drop in excess of 10 psi within the first minute of turning the key off.

Here is a link that explains how to test fuel pressure:

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Let me know what you find or if you have other questions.

Take care,

Joe
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Saturday, September 17th, 2022 AT 11:38 PM

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