PCM P0601 Smog Check fail issue

Asked by 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

44,025

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.

570

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

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.

44,025

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.

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).

44,025

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.

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.

44,025

Looks like you gonna have to start tracing some wires...

Your Answer

Add photo

Related Questions

Grand Caravan

Looking for a Used Grand Caravan in your area?

CarGurus has 11,228 nationwide Grand Caravan listings starting at $2,490.

Postal Code:

Search Dodge Grand Caravan Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Dodge Grand Caravan Experts

#1 Tom Demyan
Tom Demyan
Reputation 2,490
#2 dandyoun
dandyoun
Reputation 740
#3 FordNut
FordNut
Reputation 680
View All

Related Models For Sale

Used Chrysler Town & Country
92 Great Deals out of 951 listings starting at $4,795
Used Toyota Sienna
15 Great Deals out of 642 listings starting at $2,480
Used Dodge Caravan
108 listings starting at $3,500
Used Honda Odyssey
5 Great Deals out of 503 listings starting at $3,744
Used Kia Sedona
8 Great Deals out of 327 listings starting at $3,877
Used Nissan Quest
55 listings starting at $3,800
Used Chrysler Pacifica
4 Great Deals out of 1,239 listings starting at $4,990
Used Dodge Durango
18 Great Deals out of 899 listings starting at $3,995
Used Ford Explorer
17 Great Deals out of 889 listings starting at $3,900
Used Chevrolet Tahoe
322 listings starting at $6,477
Used Honda Pilot
5 Great Deals out of 349 listings starting at $2,300
Used Ford F-150
345 Great Deals out of 6,446 listings starting at $1,000
Used Toyota Camry
38 Great Deals out of 1,372 listings starting at $1,995

Used Cars For Sale

2017 Dodge Grand Caravan For Sale
4 Great Deals out of 6,515 listings starting at $21,640
2016 Dodge Grand Caravan For Sale
65 Great Deals out of 2,016 listings starting at $16,577
2015 Dodge Grand Caravan For Sale
53 Great Deals out of 512 listings starting at $11,862
2014 Dodge Grand Caravan For Sale
29 Great Deals out of 473 listings starting at $8,900
2013 Dodge Grand Caravan For Sale
17 Great Deals out of 400 listings starting at $7,999