PCM P0601 Smog Check fail issue

170

Asked by rtfranciss Apr 10, 2016 at 07:42 PM about the 2003 Dodge Grand Caravan

Question type: Maintenance & Repair

My Dodge Caravan won't pass smog because of code "P0601 Internal Control
Module Memory Checksum Error". I took it to a mechanic and it was going to
cost more than 1000 for a new PCM from the manufacturer (they said they
couldn't find a used one otherwise). Is the PCM something relatively easy to
replace if I buy and order the part online? I've taken apart laptops and installed
memory/airport cards before, so I'm not horrible with mechanical issues if I
have directions (especially if it's a plug and play sort of setup). Any insight
would be great.

8 Answers

220,355

It is easy to replace, it is a plug in and play as you say, but you have to make sure you have the right one for your vehicle.....P0601 DODGE - Power Control Module Internal Fault... Possible causes - Faulty Powertrain Control Module (PCM) - Powertrain Control Module (PCM) harness is open or shorted - Powertrain Control Module (PCM) cicuit poor electricl connection - Low battery voltage... The P0601 is a common code with Dodge vehicles and the most common problem is the PCM. Erasing the codes may temporary fix the problem.... Possible symptoms - Engine Light ON (or Service Engine Soon Warning Light) P0601 Dodge Description... There is an internal error in the Powertrain Control Module (PCM) system.

1 people found this helpful.
2,170

Your best bet is to invest in a Haynes manual for your vehicle. It will tell you step by step how to do it!

2 people found this helpful.
170

One more question on this. After I install it, is there any standard distance the car should be driven before I try getting it smogged again? I was told to ask my mechanic, but since I'm not going through one I'm somewhat clueless.

220,355

Yes, you should run from a full take down to 1/4 tank of fuel. During this time the PCM runs a full diagnostic on the engine, and if there are any codes present at this time, then they need to be addressed.

170

Is it normal for the check engine light to still be on during the relearning/diagnostic phase? Installed the PCM which was reprogrammed for the car and all is running ok, but light is still on (still running down that tank of gas).

3 people found this helpful.
220,355

No. This is a new PCM (computer)? Your check engine light is on? I would want to know what code it is throwing. The cel should not be on.

1 people found this helpful.
170

I thought it seemed weird. It's a used PCM that was reprogrammed and is still giving the same P0601 code. It was just suggested that it might be a bad wiring harness since it's still the same problem that I had with the last PCM.

Your Answer:

Grand Caravan

Looking for a Used Grand Caravan in your area?

CarGurus has 1,841 nationwide Grand Caravan listings starting at $2,495.

Postal Code:

CarGurus Experts

  • #1
    Whitney C
    Reputation
    3,540
  • #1
    timof5
    Reputation
    3,540
  • #3
    Rowefast
    Reputation
    2,770
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chrysler Town & Country
7 Great Deals out of 131 listings starting at $3,207
Used Toyota Sienna
42 Great Deals out of 614 listings starting at $2,499
Used Chrysler Pacifica
45 Great Deals out of 789 listings starting at $15,900
Used Honda Odyssey
37 Great Deals out of 774 listings starting at $2,900
Used Dodge Durango
54 Great Deals out of 1,919 listings starting at $7,999
Used Dodge Caravan
8 listings
Used Ford Explorer
69 Great Deals out of 2,278 listings starting at $7,990
Used Kia Sedona
14 Great Deals out of 155 listings starting at $5,000
Used Honda Pilot
32 Great Deals out of 817 listings starting at $2,495
Used Ford F-150
338 Great Deals out of 12,689 listings starting at $2,888
Used Chevrolet Tahoe
28 Great Deals out of 879 listings starting at $9,980
Used Toyota Highlander
36 Great Deals out of 793 listings starting at $5,450

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.