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Code P0A68

Quick reference

P0A68 at a glance

Plain-language meaning
This code means that the car's computer has detected that too much electricity is going through a part of the motor that helps the car move.
Urgency
High – This issue can lead to vehicle performance problems and should be addressed promptly.
Difficulty
Difficult
System
Electrical System Issue
Tools mentioned
OBD-II scanner, Multimeter, Basic hand tools

This summary uses the existing diagnostic information shown in full below.

Laymans terms

This code means that the car's computer has detected that too much electricity is going through a part of the motor that helps the car move.

Explanation

The vehicle's control system has detected an abnormally high current in the U phase of Drive Motor B, which could indicate an electrical issue.

Technical description

The P0A68 code is triggered when the Powertrain Control Module (PCM) detects a high current condition in the U phase of Drive Motor B. This is part of the electric motor system that helps drive the vehicle, and high current can indicate a short circuit or other electrical faults.

Symptoms

• Illuminated check engine light

• Reduced vehicle performance

• Unusual noises from the motor

Common Causes

• Faulty drive motor

• Damaged wiring or connectors

• Faulty inverter or control module

Glossary

Drive Motor: An electric motor that helps propel the vehicle.

Inverter: A device that converts DC power to AC power for the electric motor.

Diagnosis steps

• Use an OBD-II scanner to confirm the code.

• Inspect the wiring and connectors for damage.

• Test the drive motor and inverter for faults.

Repair procedures

• Repair or replace damaged wiring or connectors.

• Replace the faulty drive motor.

• Replace the inverter or control module if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$500 - $2000

Difficulty level

Difficult

Commonly affected vehicles

• Toyota Prius

• Chevrolet Volt

• Nissan Leaf

Preventive measures

• Regular maintenance checks

• Ensure proper electrical connections

• Avoid overloading the vehicle's electrical system

Error code type

Electrical System Issue

User experience recommendations

• Do not drive the vehicle until it is repaired.

• Consult a professional mechanic for diagnosis and repair.

Warranty information

Check if the vehicle's hybrid system warranty covers this repair.

Historical data

This code has been associated with hybrid and electric vehicles, reflecting issues in the electric drive system.

Urgency level

High – This issue can lead to vehicle performance problems and should be addressed promptly.

Testing conditions

• Vehicle in 'Ready' mode

• Motor operating under load

Component location

Drive Motor B is typically located within the vehicle's powertrain assembly, near the transmission.

FAQs

Q: Can I drive my car with a P0A68 code?
A: It's not recommended to drive with this code as it can lead to further damage or unsafe conditions.

Q: How can I prevent a P0A68 code?
A: Regular maintenance and ensuring all electrical connections are secure can help prevent this code.

Optional diagnostic gear

Tools that may help diagnose P0A68

THINKCAR ThinkScan Bidirectional diagnostic tool illustration

High-End · Full-system diagnostics

THINKCAR ThinkScan Bidirectional

A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.

Network faults often require full-system access instead of a generic code reader alone.

View on Amazon
Klein Tools MM325 diagnostic tool illustration

Universal · Digital multimeter

Klein Tools MM325

A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.

Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.

View on Amazon
WORKPRO Wiring Repair Kit diagnostic tool illustration

Universal · Wire connectors and repair kit

WORKPRO Wiring Repair Kit

Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.

Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.

View on Amazon

These are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.

Source: ezOBD2 diagnostic database
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