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Code P0A06

Quick reference

P0A06 at a glance

Plain-language meaning
This code means that the car's computer has detected a problem with the electric pump that cools the motor's electronics. It's not working as it should.
Urgency
Moderate – This issue should be addressed soon to prevent potential damage to electronic components.
Difficulty
Moderate
System
Sensor 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 a problem with the electric pump that cools the motor's electronics. It's not working as it should.

Explanation

The P0A06 code indicates a low voltage or poor performance in the control circuit of the motor electronics coolant pump A.

Technical description

The motor electronics coolant pump is responsible for circulating coolant to maintain the temperature of the motor's electronic components. A 'Control Circuit Low' error suggests that the voltage in the control circuit is lower than expected, which can affect the pump's performance.

Symptoms

• Check Engine Light is on

• Overheating of motor electronics

• Reduced vehicle performance

Common Causes

• Faulty coolant pump

• Wiring issues such as shorts or open circuits

• Faulty control module

Glossary

Coolant Pump: A device that circulates coolant to maintain temperature.

Control Circuit: The electrical pathway that controls a component's operation.

Diagnosis steps

• Check for any stored codes and freeze frame data

• Inspect the wiring and connectors for damage

• Test the coolant pump for proper operation

Repair procedures

• Replace the faulty coolant pump

• Repair or replace damaged wiring or connectors

• Replace the control module if necessary

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$150 - $600

Difficulty level

Moderate

Commonly affected vehicles

• Toyota Prius

• Chevrolet Volt

• Ford Fusion Hybrid

Preventive measures

• Regular maintenance of the cooling system

• Routine checks of wiring and connectors

• Ensure proper coolant levels

Error code type

Sensor Issue

User experience recommendations

• Avoid driving the vehicle if overheating occurs

• Seek professional diagnosis and repair

• Monitor coolant levels regularly

Warranty information

Check with the vehicle manufacturer for warranty coverage on the cooling system components.

Historical data

This code has been more commonly reported in hybrid vehicles due to their complex electronic systems.

Urgency level

Moderate – This issue should be addressed soon to prevent potential damage to electronic components.

Testing conditions

• Vehicle engine running

• Coolant system pressurized

Component location

The motor electronics coolant pump is typically located near the engine or electronic control modules.

FAQs

Q: Can I drive my car with a P0A06 code?
A: It's not recommended to drive the vehicle if the electronics are overheating, as it can cause further damage.

Q: How do I reset the P0A06 code?
A: After repairs, the code can be cleared using an OBD-II scanner, but ensure the issue is fixed first.

Optional diagnostic gear

Tools that may help diagnose P0A06

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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