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Home >> Toyota >> 2025 >> Prius Plug-In Hybrid SE >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Battery System (PHEV) - Diagnostic Codes (4 Of 4) & Circuit Tests >> HYBRID BATTERY SYSTEM (for PHEV Model) >> DTC P33DA-1E: Hybrid/EV Battery Stack 1 Circuit Resistance Out of Range; DTC P33DB-1E: Hybrid/EV Battery Stack 2 Circuit Resistance Out of Range; DTC P33DC-1E: Hybrid/EV Battery Stack 3 Circuit Resistance Out of Range [03/2023 - ] >> Description

DTC P33DA-1E: Hybrid/EV Battery Stack 1 Circuit Resistance Out of Range; DTC P33DB-1E: Hybrid/EV Battery Stack 2 Circuit Resistance Out of Range; DTC P33DC-1E: Hybrid/EV Battery Stack 3 Circuit Resistance Out of Range [03/2023 - ]: Description

The HV battery is composed of 72 cells (3.7 V each) in series. The battery ECU assembly monitors the internal resistance of each HV battery cell to detect malfunctions of the HV battery.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate DTC Output from Priority Note
P33DA-1E Hybrid/EV Battery Stack 1 Circuit Resistance Out of Range The difference in internal resistance of each cell of the No. 1 HV supply stack sub-assembly exceeds the threshold.
(1 trip detection logic)
  • No. 1 HV supply stack sub-assembly
  • Service plug grip
Comes on Master Warning:
Comes on
HV Battery A SAE Code:
P33DA
P33DB-1E Hybrid/EV Battery Stack 2 Circuit Resistance Out of Range The difference in internal resistance of each cell of the No. 2 HV supply stack sub-assembly exceeds the threshold.
(1 trip detection logic)
  • No. 2 HV supply stack sub-assembly
  • Service plug grip
Comes on Master Warning:
Comes on
HV Battery A SAE Code:
P33DB
P33DC-1E Hybrid/EV Battery Stack 3 Circuit Resistance Out of Range The difference in internal resistance of each cell of the No. 3 HV supply stack sub-assembly exceeds the threshold.
(1 trip detection logic)
  • No. 3 HV supply stack sub-assembly
  • Service plug grip
Comes on Master Warning:
Comes on
HV Battery A SAE Code:
P33DC

HINT: 

These DTCs can be stored after clearing DTCs and driving the vehicle for approximately 10 minutes.