System: Powertrain (P-Code) Coverage: OEM Specific (Dodge) Fault Family: lost_comm_powertrain_module

Code P1698: No CCD Messages Received From PCM

Diagnostic & Technical Explanation

P1698 sets when the gateway or another control module stops receiving any messages from a powertrain-side module or smart sensor -- the ECM/PCM, TCM, or one of the engine-bay LIN-networked sensors (MAP, MAF, EGR, turbo boost, fuel pressure, and similar) that report over a low-speed sub-bus feeding into the high-speed backbone. These nodes live in the engine compartment where connectors see more heat-cycling, vibration, and oil/coolant contamination than any other module class, so a burned or corroded engine-harness connector is the leading cause, followed by a blown fuse for that module's dedicated power circuit.

Probability-Ranked Repair Procedures (4 Ranked Fixes)

Rank #1

Check the module's dedicated fuse and battery/ground connections

Easy DIY

Parts Estimate: $8.0–$25.0 USD Labor Estimate: 0.4 Shop Hours

1. Identify the fuse feeding the specific powertrain module or sensor node named in the code
2. Inspect the fuse and the engine-bay ground strap for corrosion
3. Replace the fuse if blown and retest for communication

Required Replacement Parts: 🔧 Automotive fuse assortment · 🔧 Battery terminal cleaning brush

Rank #2

Inspect and clean the engine-harness connector at the named module

Moderate DIY

Parts Estimate: $12.0–$40.0 USD Labor Estimate: 0.6 Shop Hours

1. Locate the connector for the module or sensor identified in the fault description
2. Inspect for melted plastic, oil contamination, or backed-out terminals
3. Clean contacts with electrical contact cleaner and apply dielectric grease on reassembly
4. Clear codes and confirm the module rejoins the network

Required Replacement Parts: 🔧 Electrical contact cleaner · 🔧 Dielectric grease pack

Rank #3

Repair the LIN/CAN sub-bus wiring feeding the module

Moderate DIY

Parts Estimate: $20.0–$90.0 USD Labor Estimate: 1.3 Shop Hours

1. Trace the sub-bus wire from the named module toward the gateway connection point
2. Inspect for chafe against exhaust heat shields or engine mount brackets
3. Cut out and splice in heat-resistant wire rated for engine-bay temperatures
4. Protect the repair with high-temperature adhesive-lined heat-shrink
5. Verify the module reports live data on a scan tool

Required Replacement Parts: 🔧 High-temperature automotive wire · 🔧 Adhesive-lined heat-shrink splice kit (high-temp)

Rank #4

Replace and reprogram the powertrain module or sensor node

Professional Required

Parts Estimate: $120.0–$650.0 USD Labor Estimate: 1.8 Shop Hours

1. Confirm the module or smart sensor's internal transceiver has failed through isolation testing
2. Remove and replace the component
3. Program or configure the replacement using a factory-level scan tool where required
4. Confirm stable communication and correct live data over a full drive cycle

Required Replacement Parts: 🔧 Replacement module or sensor (OEM specific) · 🔧 Programming/subscription session