Overheating, cooling fan will not turn on and code P0601

Hi,

The cooling fan issue is likely related to the powertrain control module failure. I don't see a need to hotwire it at this point.

I'm not sure why the problem started with a blowout, but something happened. Here is what the code indicates (right from my manual):

2002 Chrysler Truck PT Cruiser L4-2.4L VIN B
P0601
Vehicle ALL Diagnostic Trouble Codes ( DTC ) Testing and Inspection P Code Charts P0601
P0601
Test 1

See pic 1

SYMPTOM
P0601-PCM INTERNAL CONTROLLER FAILURE

TEST NOTE
This symptom is diagnosed using the test P0600-PCM FAILURE SPI COMMUNICATIONS.

WHEN MONITORED
Ignition key ON.

SET CONDITION
Internal checksum for software failed, does not match calculated value.

POSSIBLE CAUSES
- PCM Internal Or SPI

_______________________________

Now, the directions indicate either a failed PCM or an issue with the SPI (serial peripheral interface). In understandable terms, there could be a break down in communication in the controller area network (CAN). The CAN is a means of communication between all of the modules/computers via a few wires.

When the tire blew out, was there any damage done to the vehicle? If not, the next thing I would try is to scan the can-bus system to see if there is an indication of possible can issues.

Here is a video showing how that is done:

https://youtu.be/InIlnsjOVFA

If you still find a P0601 is the only code, there is a good chance the PCM has an internal fault and needs replaced.

Let me know if that helps or if you have other questions.

Take care,
Joe

Hi,

I would imaging any automotive repair facility. I know parts stores will scan for free, but I'm not sure if they have the scan tool to do the entire system

Most shops usually have a set charge for scanning. It shouldn't take more than 15 minutes.

Let me know if I can help.

Joe