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Code P1A97

Quick reference

P1A97 at a glance

Plain-language meaning
This code means that the car's computer has detected a problem with the power supply to a sensor that helps control the electric motor. It's like when a toy doesn't work because its battery is too low.
Urgency
Moderate – While the vehicle may still be drivable, performance may be affected, and further damage could occur if not addressed.
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 power supply to a sensor that helps control the electric motor. It's like when a toy doesn't work because its battery is too low.

Explanation

The vehicle's control module has detected that the voltage in the 5V sensor power supply circuit for Drive Motor 'A' is lower than expected.

Technical description

The P1A97 code is triggered when the Drive Motor 'A' Control Module detects a low voltage condition in the 5V sensor power supply circuit. This circuit is crucial for providing the necessary voltage to sensors that monitor and control the electric drive motor's operation.

Symptoms

• Check Engine Light illuminated

• Reduced vehicle performance

• Electric motor may not operate properly

Common Causes

• Faulty sensor

• Wiring issues or poor connections

• Defective control module

Glossary

Control Module: A computer in the vehicle that manages specific functions.

Sensor: A device that detects or measures a physical property and records, indicates, or otherwise responds to it.

Diagnosis steps

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

• Inspect wiring and connectors for damage or corrosion.

• Test the voltage output of the 5V sensor power supply circuit.

Repair procedures

• Repair or replace damaged wiring or connectors.

• Replace the faulty sensor.

• Replace the control module if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$100 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Chevrolet Volt

• Nissan Leaf

• Toyota Prius

Preventive measures

• Regular maintenance checks

• Ensure proper electrical connections

• Avoid exposure to extreme weather conditions

Error code type

Sensor Issue

User experience recommendations

• Do not ignore the Check Engine Light.

• Have the vehicle inspected by a professional as soon as possible.

Warranty information

Check with your vehicle manufacturer for specific warranty coverage related to the control module and sensors.

Historical data

This code has been more frequently reported in hybrid and electric vehicles due to their reliance on electric drive systems.

Urgency level

Moderate – While the vehicle may still be drivable, performance may be affected, and further damage could occur if not addressed.

Testing conditions

• Vehicle must be running

• Electric drive system engaged

Component location

The control module is typically located near the electric drive motor, often in the engine bay or under the vehicle.

FAQs

Q: Can I drive my car with this code?
A: It's possible to drive, but it's not recommended as it may lead to reduced performance and further damage.

Q: Is this an expensive fix?
A: The cost can vary, but it typically ranges from $100 to $500 depending on the specific issue.

Optional diagnostic gear

Tools that may help diagnose P1A97

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.

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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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