Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC P1CD8-00: Hybrid/EV Powertrain Control Module Processor Or Monitoring Processor Charging Permission Signal Internal Failure: Notes
- -
Outline of diagnosis:
The charger gate permission signal from Hybrid vehicle control ECU assembly is faulty
(1 trip detection logic)
Trouble symptom:
Plug-in charging suspended
CAUTION:Before performing diagnosis, refer to "CAUTION" in "General Description". Ref. to P-HEV HYBRID POWERTRAIN CONTROL (DIAGNOSTICS)>GENERAL DESCRIPTION>CAUTION .
- CHECK DTC
.
Read the following DTCs using Subaru Select Monitor. Ref. to P-HEV HYBRID POWERTRAIN CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) . Ref. to PLUG-IN BATTERY CHARGER (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .
- P-HEV Hybrid Powertrain Control
- Plug-in Battery Charger
NOTE:Malfunction contents System Related DTC Microcomputer malfunction P-HEV Hybrid Powertrain Control P0606-47 HYBRID/EV POWERTRAIN CONTROL MODULE PROCESSOR WATCHDOG/SAFETY MCU FAILURE P0606-87 HYBRID/EV POWERTRAIN CONTROL MODULE PROCESSOR TO MONITORING PROCESSOR MISSING MESSAGE P060A-47 HYBRID/EV POWERTRAIN CONTROL MODULE MONITORING PROCESSOR WATCHDOG/SAFETY MCU FAILURE P060A-87 HYBRID/EV POWERTRAIN CONTROL MODULE PROCESSOR FROM MONITORING PROCESSOR MISSING MESSAGE P1C9E-9F HYBRID/EV SYSTEM RESET STUCK OFF P1CD9-00 HYBRID/EV POWERTRAIN CONTROL MODULE PROCESSOR AND MONITORING PROCESSOR CHARGING PERMISSION SIGNAL STUCK ON Plug-in Battery Charger P060B-49 PLUG-IN CONTROL MODULE A/D PROCESSING INTERNAL ELECTRONIC FAILURE Communication system malfunction Plug-in Battery Charger U019B-87 LOST COMMUNICATION WITH HYBRID/EV BATTERY CHARGER CONTROL MODULE MISSING MESSAGE When "Only DTC P1CD8-00 is displayed" or "DTC other than above is displayed", go to A.
When DTCs related to [P-HEV Hybrid Powertrain Control], mentioned above, are simultaneously displayed, go to B.
When DTCs related to [Plug-in Battery Charger], mentioned above, are simultaneously displayed, go to C.
Yes:
- Replace Hybrid vehicle control ECU assembly. Ref. to HYBRID ELECTRIC VEHICLE>HYBRID POWERTRAIN CONTROL MODULE .
- Perform the diagnosis for the simultaneously displayed DTCs.NOTE:
If more than one DTC is simultaneously displayed, perform the diagnosis in the order described in the above.
- Perform the diagnosis for the simultaneously displayed DTCs.NOTE:
If more than one DTC is simultaneously displayed, perform the diagnosis in the order described in the above.
No:
-
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.