DTC P0606-04: Control Module Processor System Internal Failure; DTC P0606-29: Control Module Processor Signal Invalid; DTC P0606-2A: Control Module Processor Signal Stuck in Range; DTC P0606-47: Control Module Processor Watchdog/Safety MCU Failure [12/2019 - 10/2022]: Procedure

1. Clear the DTCs.

   Powertrain > Engine > Clear DTCs 

2. Turn the ignition switch off and wait for at least 30 seconds.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  2

1. Disconnect the cable from the negative (-) battery terminal and wait for 1 minute.
2. Connect the cable to the negative (-) battery terminal.
3. Wait 1 second or more.
4. Read the DTCs.

   Powertrain > Engine > Trouble Codes 

   Result

   Result	Proceed to
   DTCs are not output	A
   DTC P0606-04, P0606-29, P0606-2A or P0606-47 is output	B

Result: 

A 

CHECK FOR INTERMITTENT PROBLEMS. Refer to  CHECK FOR INTERMITTENT PROBLEMS [12/2019 - 10/2022] 

Result: 

B 

REPLACE ECM. Refer to  REMOVAL [12/2019 - 09/2020]  , or refer to  REMOVAL [09/2020 - 10/2022]