P0606 Internal Control Processor

P0606 Code - When the Powertrain Control Module (PCM) recognizes an internal failure to communicate or the CMP and CKP sensor count periods are too short.


Default actions:
- The ETC light flash
- Throttle input and vehicle speed are limited
- MIL is illuminate
- Throttle input and vehicle speed are limited

Possible cause P0606 is the Powertrain Control Module (PCM)

Check for an active DTC
Diagnose any CMP or CKP sensor faults before continuing. Check for intermittent loose CMP and CKP connections. Diagnose any repair any low system voltage DTCs before proceeding. Turn the ignition on with the scan tool erase DTCs. Monitor the scan tool for at least two minutes, cycle the ignition off and on several times, leaving the ignition on for at least 10 seconds at a time. Start the engine and allow it to idle, with the scan tool read DTC.

Is the DTC active or pending?

Yes, go to step 2.
No, perform the Intermittent condition.

Step 2. Check related PCM and component connections

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