NO CCD MESSAGES RECEIVED FROM PCM error code p1698 speedometer not working and not shifting down

Trouble code P1698 means: No CCD Messages Received From The TCM. This refers to a bad instrument panel. God-Bless! And hope this helps you out. If any guages do not work, tap on the panel to see if it responds. if not, replace it.

Hi Don The code you have is 'No CCD Messages Received From PCM' Hope this helps. Different manufactures use different terminology for a number of units and I have no idea what they are referring to. If this makes sense to you please tell me what they mean. I'm also learning. Best regards John

Trouble Co Power Control Module A module or computer used in an electronic transmission to aid in control of the shift solenoidsde: P1698

No CCD Messages Received From The TCM
Possible Causes:


CCD data Bus circuit is open, shorted to ground or to power TCM or the PCM has failed

The description for fault code P1698 is "No CCD Messages Received From PCM" The CCD bus is the circuit that your computer system uses to communicate between the computers. There are several Computers in your vehicle. You didn't mention year or model or engine size, so I can't be specific, but most have at least an Powertrain Control Module (PCM) computer, Transmission Control Module (TCM) computer, an Antilock Brake System (ABS) computer, a Passive Restraint (Air Bag) computer and the Instrument Panel Cluster (IPC) when one of these computers are unable to communicate through the CCD Bus, the other computers will tell on it. Thus, code P1698.

This can be an internal fault in the PCM (not very likely) it can be a shorted or open CCD Bus circuit, or it could be caused by the PCM losing one of its power or ground circuits and momentarilly shutting down. If your instrument cluster is also having problems like you described, the problem is most likely a power or ground circuit malfunction. The rest of your computers need to be scanned to assist in pinpointing the actual cause of this code. The "Generic OBD" scanners that they use to sell parts with at the auto parts stores do not have the capability to scan your ABS, IPC, Air Bag, or other modules. They can also not access the "Vehicle Specific" side of your PCM. They can only scan the "Generic" codes that are output by the PCM. Again, this is most likely caused by an open or shorted circuit or even a malfunctioning ignition switch - something is most likely causing the PCM, the TCM or the IPC to lose power while you are driving.

You may also find this article helpful: What Else Could Be Wrong?

P1698 Chrysler

ECM fault-No CCD message from TCM
- Failed ECM

Probable Cause[s]

1. Open CCD bus line
2. Failed TCM

P1495 Chrysler

EVAP leak detection pump solenoid circuit condition
- ECM detected the pump solenoid did not change status when activated

Probable Cause[s]

1. Pump solenoid defective
2. Open or shorted circuit condition
3. ECM Defective

Chrysler EVAP P0442 P0445 Smoke Diagnostics
P1698 Dodge PCM Fault No CCD Message From TCM
Do you know what a serial data communication network is ?
CCD SCI DATA LINES TECH TIP

Sorry dude but you don't have a prayer of a chance to fix this ! You know anything about automotive electronics , electrical systems ? Have a factory or professional scan tool . Going to advance auto won't cut it .

Code P1698 means
* P1698 PCM Failure EEPROM Write Denied
* P1698 -No CCD messages from the Transmission or Body Control Module (TCM or BCM) Probably needs a new PCM (Aka computer or ECU)

It means that it didn't receive a signal from the transmision module.
Have your transmission control module checked.

To reset your engine codes:
Remove the negative terminal of your battery (10mm wrench).
Turn your ignition key to START and hold it there for about 15 seconds.
Turn your ignition key to OFF and remove it.
Connect the negative terminal of your battery.

TCM (Trans control Module)
(electronic transmission control module)

The p1698 code is for the (bus) that is how the computers commmunicate with each other and also how the scan tool talks to the computers.

There is a common problem with these vans, that would be a good place to start. The battery will leak acid onto the wires underneath the battery. If you remove the battery and battery tray you will be able to see the large wiring harness under the battery. Inspect all of the wires underneath the battery for damage.