P1698 no spark

Both point to a problem with a module rather than a sensor. We have an auto-electrician Expert here and hopefully he will be along. The first thing to do is clear the codes and see if they come back. If they do, you need a good auto-electrician, not a mechanic and not a guy from Autozone.

This tells you what causes P1698.

P1698 JEEP Code - PCM Fault No CCD Message From TCM

https://www.engine-codes.com > p1698_jeep
'P1698 JEEP code possible causes · Faulty Transmission Control Module (TCM) · Transmission Control Module harness is open or shorted · Transmission Control Module ...

This tell you all the items that can cause P1391.

P1391 JEEP Code - CMP or CKP Signal Intermittent Condition

https://www.autocodes.com > p1391_jeep
'P1391 JEEP code description ... The Powertrain Control Module (PCM) monitors the Camshaft Position Sensor (CMP) Or Crankshaft Position Sensor

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You should NOT be driving this vehicle if it is in limp mode. You will need to pay a Good Auto-electrician to look at this problem.
All modern cars and trucks are fitted with electronic control units referred to as the PCM and the TCM. P1698 refers to these units not communicating properly with each other. So the vehicle goes into a safety set up until the problem it fixed, Limp Mode.

the following links should help
2003 Dodge Caravan Engine Code P1698 Computer Problem 2003 Dodge P1698 P1698 Dodge PCM Fault No CCD Message From TCM

Type: OBD P1698

P1698 DODGE - DTC Detected in Companion JTEC Mod

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)
autocom can help you check your car and clear the fault codes.

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

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)