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Home >> Toyota >> 2025 >> Prius LE >> Repair and Diagnosis (Single Page) >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System - Diagnostic Codes (6 Of 6), Circuit Tests & Symptom Tests >> Electronically Controlled Brake System >> DTC U0110-00: Lost Communication with Drive Motor Control Module "A"; DTC U0129-87: Lost Communication with Brake System Control Module "A" Missing Message; DTC U0293-00: Lost Communication with Hybrid/EV Powertrain Control Module; DTC U1106-00: Lost Communication with Electric Parking Brake Module; DTC U114A-00: Lost Communication with Sub Battery System (System 2) Missing Message; DTC U1150-00: Lost Communication with Hybrid Powertrain Control Module (ch2); DTC U117D-87: Lost Communication with Brake System Control Module (ch4) Missing Message [12/2022 - 03/2023] >> Typical Enabling Conditions
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Typical Enabling Conditions

U0110

Monitor runs whenever the following DTCs are not stored C14C8: Brake system voltage circuit high
U0293: Lost communication with HPCM (CH1)
All of the following conditions are met A, B, C, D, E and F
A. Both of the following conditions a and b are met More than 1 second
a. Both of the following conditions are met More than 0.198 seconds
+BS cut MOS Valid
+BS cut MOS voltage Higher than 7.4 V
b. Both of the following conditions are met More than 0.012 seconds
+BS cut MOS Valid
+BS cut MOS voltage Below 23.2 V
B. CAN communication status Enable
C. Following condition is met More than 3 seconds
IGP_PT2 voltage Higher than 9.5 V
D. Following condition is met More than 3 seconds
IGR voltage Higher than 9.5 V
E. Following condition is met More than 3 seconds
IGP_PT2 On
F. +BS cut MOS voltage Higher than 7.8 V
U0129 AND U117D

Monitor runs whenever the following DTCs are not stored C14C8: Brake system voltage circuit high
All of the following conditions are met A, B, C, D and E
A. Both of the following conditions a and b are met More than 1 second
a. Both of the following conditions are met More than 0.198 seconds
+BS cut MOS Valid
+BS cut MOS voltage Higher than 7.4 V
b. Both of the following conditions are met More than 0.012 seconds
+BS cut MOS Valid
+BS cut MOS voltage Below 23.2 V
B. CAN communication status Enable
C. Following condition is met More than 3 seconds
IGR voltage Higher than 9.5 V
D. Following condition is met More than 3 seconds
IGR On
E. +BS cut MOS voltage Higher than 7.8 V
U0293

Monitor runs whenever the following DTCs are not stored C14C8: Brake system voltage circuit high
All of the following conditions are met A, B, C, D and E
A. Both of the following conditions a and b are met More than 1 second
a. Both of the following conditions are met More than 0.198 seconds
+BS cut MOS Valid
+BS cut MOS voltage Higher than 7.4 V
b. Both of the following conditions are met More than 0.012 seconds
+BS cut MOS Valid
+BS cut MOS voltage Below 23.2 V
B. CAN communication status Enable
C. Both of the following conditions are met More than 3 seconds
IGR voltage Higher than 9.5 V
IGP_PT2 voltage Higher than 9.5 V
D. Both of the following conditions are met More than 3 seconds
IGR On
IGP_PT2 On
E. +BS cut MOS voltage Higher than 7.8 V
U1150

Monitor runs whenever the following DTCs are not stored C14C8: Brake system voltage circuit high
U0293: Lost communication with HPCM (CH1)
All of the following conditions are met A, B, C, D, E and F
A. Both of the following conditions a and b are met More than 1 second
a. Both of the following conditions are met More than 0.198 seconds
+BS cut MOS Valid
+BS cut MOS voltage Higher than 7.4 V
b. Both of the following conditions are met More than 0.012 seconds
+BS cut MOS Valid
+BS cut MOS voltage Below 23.2 V
B. CAN communication status Enable
C. Both of the following conditions are met More than 3 seconds
IGR voltage Higher than 9.5 V
IGP_PT2 voltage Higher than 9.5 V
D. Both of the following conditions are met More than 3 seconds
IGR On
IGP_PT2 On
E. +BS cut MOS voltage Higher than 7.8 V
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