Fault Family System: Powertrain (P-Codes) 20 SAE Codes

Drive Motor Inverter Voltage Sensor

Diagnostic & Technical Explanation

Code P0D2D sets when the control module detects an implausible reading from the sensor monitoring the drive motor inverter's internal DC-bus voltage — the voltage at the capacitor bank inside the inverter disagrees with what the pack's HV bus voltage should deliver through the contactors. The most common physical causes are a corroded connection at the sense-wire tap inside the inverter housing, a failed input on the inverter's internal monitoring IC, and a degraded input capacitor that lets the internal bus voltage sag under load even though the pack-side voltage reads normal. Because this sensor monitors voltage after the HV connector rather than at the pack itself, it isolates inverter-internal faults from pack or bus-bar faults reported elsewhere.

These 20 diagnostic trouble codes share one detection mechanism and one repair path, which is why MechanicDB groups them into a single authored fault family rather than repeating the same explanation 20 times.

Codes in this family (20)

Code	Definition	Repair coverage
P0D2D	Drive Motor A Inverter Voltage Sensor 'A' Circuit	4 ranked fixes
P0D2E	Drive Motor A Inverter Voltage Sensor 'A' Circuit Range/Performance	4 ranked fixes
P0D2F	Drive Motor A Inverter Voltage Sensor 'A' Circuit Low	4 ranked fixes
P0D30	Drive Motor A Inverter Voltage Sensor 'A' Circuit High	4 ranked fixes
P0D31	Drive Motor A Inverter Voltage Sensor 'A' Circuit Intermittent/Erratic	4 ranked fixes
P0DA3	Drive Motor B Inverter Voltage Sensor 'A' Circuit	4 ranked fixes
P0DA4	Drive Motor B Inverter Voltage Sensor 'A' Circuit Range/Performance	4 ranked fixes
P0DA5	Drive Motor B Inverter Voltage Sensor 'A' Circuit Low	4 ranked fixes
P0DA6	Drive Motor B Inverter Voltage Sensor 'A' Circuit High	4 ranked fixes
P0DA7	Drive Motor B Inverter Voltage Sensor 'A' Circuit Intermittent/Erratic	4 ranked fixes
P0E8C	Drive Motor A Inverter Voltage Sensor 'B' Circuit	4 ranked fixes
P0E8D	Drive Motor A Inverter Voltage Sensor 'B' Circuit Range/Performance	4 ranked fixes
P0E8E	Drive Motor A Inverter Voltage Sensor 'B' Circuit Low	4 ranked fixes
P0E8F	Drive Motor A Inverter Voltage Sensor 'B' Circuit High	4 ranked fixes
P0E90	Drive Motor A Inverter Voltage Sensor 'B' Circuit Intermittent/Erratic	4 ranked fixes
P0E91	Drive Motor B Inverter Voltage Sensor 'B' Circuit	4 ranked fixes
P0E92	Drive Motor B Inverter Voltage Sensor 'B' Circuit Range/Performance	4 ranked fixes
P0E93	Drive Motor B Inverter Voltage Sensor 'B' Circuit Low	4 ranked fixes
P0E94	Drive Motor B Inverter Voltage Sensor 'B' Circuit High	4 ranked fixes
P0E95	Drive Motor B Inverter Voltage Sensor 'B' Circuit Intermittent/Erratic	4 ranked fixes

What this page does not show

This page publishes the fault mechanism and the code index. The licensed dataset adds, for every one of the 15,886 codes, the full authored repair set (56,729 procedures in total) with the fields deliberately withheld here:

Procedures 2..n after the first-listed procedure
Aftermarket parts cost ranges in USD (est_parts_cost_min/max_usd)
Professional labor-hour estimates (est_labor_hours)
Step-by-step diagnostic and repair instructions
Replacement-part mappings and catalog lookups
6,637 manufacturer-specific OEM codes across 32 makes ($149 tier)

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