HYBRID CONTROL SYSTEM, Diagnostic DTC:P0B23-129
| DTC Code | DTC Name |
|---|---|
| P0B23-129 | Hybrid Battery "A" Voltage |
DTC SUMMARY
MALFUNCTION DESCRIPTION
The hybrid vehicle control ECU detects a VB sensor malfunction.
The cause of this malfunction may be one of the following:
Inside of battery voltage sensor VB sensor circuit malfunction
Battery voltage sensor malfunction
Communication (wire harness) malfunction
High voltage system malfunction
HV battery malfunction
DESCRIPTION
The battery voltage sensor (battery energy control module) sends HV battery voltage information to the hybrid vehicle control ECU via serial communication.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Warning Indicate |
|---|---|---|---|---|---|
P0B23-129 |
Hybrid Battery "A" Voltage |
Battery voltage sensor malfunction ("Power Resource VB" output value is abnormal): When not boosting the difference between "Power Resource VB" and "VL-Voltage before Boosting" is large, and also "Power Resource VB" and "VH-Voltage after Boosting" is large. (1 trip detection logic) |
Battery voltage sensor |
Comes on |
Master Warning Light: Comes on |
DTC No. |
Data List |
|---|---|
P0B23-129 |
|
The following items can be helpful when performing repairs:
Data List
Ready Signal
CAUTION / NOTICE / HINT
Performing the check procedures for a long time with the shift lever in N may cause DTC P3000-388 to be set.
If it is necessary to replace the battery voltage sensor, voltages need to be confirmed after installing the new battery voltage sensor. Confirm that "Power Resource VB", "VL-Voltage before Boosting", and "VH-Voltage after Boosting" in the Data List are 280 V or more with the power switch on (READY), the shift lever in P, and the engine stopped. When the system is normal, the "Power Resource VB", "VL-Voltage before Boosting", and "VH-Voltage after Boosting" values should be almost equal (voltage boosting will not occur when the shift lever is in N). If the difference between each voltage exceeds the values specified below, there is a malfunction.
Inspection voltage
Maximum voltage difference
Difference between "Power Resource VB" and "VL-Voltage before Boosting"
34 V
Difference between "Power Resource VB" and "VH-Voltage after Boosting"
31 V
Difference between "VL-Voltage before Boosting" and "VH-Voltage after Boosting"
42 V
After the repair, if "VL-Voltage before Boosting" and "Power Resource VB" are approximately the same when the power switch is turned on (READY) with the shift lever in P and the accelerator pedal not depressed, the condition is judged as normal.
PROCEDURE
CHECK DTC OUTPUT (HYBRID CONTROL)
Connect the GTS to the DLC3.
Turn the power switch on (IG).
Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
Check for DTCs.
Powertrain > Hybrid Control > Trouble Codes
Result
Result
Proceed to
P0B23-129 only is output, or DTCs except the ones in the tables below are also output.
A
DTCs shown in Table 1 are output simultaneously.
B
DTCs shown in Table 2 are output simultaneously.
C
Table 1
Malfunction Content
Relevant DTC
Microcomputer malfunction
P0A1A-151, 658
Generator Control Module
P0A1B-786
Drive Motor "A" Control Module
P0A1D-148
Hybrid Powertrain Control Module
P1C2A-155
Generator A/D Converter Circuit
P1CA6-156
Generator Control Module Malfunction
P1CA7-193
Drive Motor Control Module Malfunction
P2511-149
HV CPU Power Relay Sense Circuit Intermittent No Continuity
P3133-659
Communication Error from Generator to Drive Motor "A"
P3134-661
Communication Error from Drive Motor "A" to Generator
P324E-788
MG-ECU Power Relay Intermittent Circuit
Power source circuit malfunction
P06E6-164
Sensor Power Supply "C" Circuit / Open
P1C73-512
Sensor Standard Voltage "F" Circuit / Open
Communication system malfunction
U0110 (all INF codes)*
Lost Communication with Drive Motor Control Module "A"
System malfunction
P0D2F-266
Drive Motor "A" Inverter Voltage Sensor Circuit Low
P0D30-267
Drive Motor "A" Inverter Voltage Sensor Circuit High
P0E33-589
DC/DC Converter Voltage Sensor "A" Low
P0E34-590
DC/DC Converter Voltage Sensor "A" High
Table 2
Malfunction Content
Relevant DTC
Microcomputer malfunction
P0AFC-123
Hybrid Battery Pack Sensor Module
Sensor and actuator circuit malfunction
P0B3D-123
Hybrid Battery Voltage Sensor "A" Circuit Low
P0B42-123
Hybrid Battery Voltage Sensor "B" Circuit Low
P0B47-123
Hybrid Battery Voltage Sensor "C" Circuit Low
P0B4C-123
Hybrid Battery Voltage Sensor "D" Circuit Low
P0B51-123
Hybrid Battery Voltage Sensor "E" Circuit Low
P0B56-123
Hybrid Battery Voltage Sensor "F" Circuit Low
P0B5B-123
Hybrid Battery Voltage Sensor "G" Circuit Low
P0B60-123
Hybrid Battery Voltage Sensor "H" Circuit Low
P0B65-123
Hybrid Battery Voltage Sensor "I" Circuit Low
P0B6A-123
Hybrid Battery Voltage Sensor "J" Circuit Low
P0B6F-123
Hybrid Battery Voltage Sensor "K" Circuit Low
P0B74-123
Hybrid Battery Voltage Sensor "L" Circuit Low
P0B79-123
Hybrid Battery Voltage Sensor "M" Circuit Low
P0B7E-123
Hybrid Battery Voltage Sensor "N" Circuit Low
P0B83-123
Hybrid Battery Voltage Sensor "O" Circuit Low
P0B88-123
Hybrid Battery Voltage Sensor "P" Circuit Low
P0B8D-123
Hybrid Battery Voltage Sensor "Q" Circuit Low
P0B92-123
Hybrid Battery Voltage Sensor "R" Circuit Low
P308A-123
Hybrid Battery Voltage Sensor All Circuits Low
Tip:*1: If any INF codes are output for this DTC, refer to the corresponding diagnostic procedure.
P0B23-129 may be output as a result of the malfunction indicated by the DTCs above.
-
The chart above is listed in inspection order of priority.
Check DTCs that are output at the same time by following the listed order. (The main cause of the malfunction can be determined without performing unnecessary inspections.)
Turn the power switch off.