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Jeep P1698

No CCD Messages Received From PCM

What P1698 means on a Jeep

On Jeep vehicles, P1698 is logged when the ECU detects a fault in the powertrain: “No CCD Messages Received From PCM”. P1698 is a manufacturer-specific Jeep code (the "1" after the letter marks an OEM-defined code), so its meaning applies to Jeep and may differ on other makes.

Common causes & symptoms

Typical triggers for a powertrain code like P1698 include faulty or ageing sensors, wiring/connector faults, a clogged or removed component, or a value drifting outside the ECU's expected window. Symptoms range from a check-engine light only, to limp mode, rough running, higher consumption or failed emissions tests.

P1698 and ECU tuning

When a Jeep has had hardware changed for off-road/motorsport use (for example a removed DPF or EGR), the related monitor must be disabled in the ECU map or the code re-appears. Softechpro Solutions performs DPF/EGR/AdBlue/DTC off and recalculates the checksum, so codes like P1698 stay cleared after the flash. Genuine faults should always be repaired, not just hidden.

Related Jeep codes

Need to clear P1698 after a delete?

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