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Code P2C70

Quick reference

P2C70 at a glance

Plain-language meaning
This code means that the car's computer has detected that the electric motor isn't getting enough power in one part of its system.
Urgency
High – This issue can affect vehicle performance and safety.
Difficulty
Moderate
System
Electric Drive System Issue
Tools mentioned
Multimeter, OBD-II scanner, Insulation resistance tester

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

Laymans terms

This code means that the car's computer has detected that the electric motor isn't getting enough power in one part of its system.

Explanation

The code indicates a low current condition in the 'Z' phase of the drive motor 'A', which is part of the electric drive system.

Technical description

The P2C70 code is triggered when the vehicle's control module detects that the current flowing through the 'Z' phase of the drive motor 'A' is below the expected threshold. This could affect the performance of the electric motor and, consequently, the vehicle's driving capabilities.

Symptoms

• Reduced vehicle performance

• Warning light on the dashboard

• Unusual noise from the motor

Common Causes

• Faulty drive motor

• Damaged wiring or connectors

• Defective power inverter module

Glossary

Drive Motor: The component that converts electrical energy into mechanical energy to move the vehicle.

Power Inverter Module: A device that converts DC power from the battery to AC power for the electric motor.

Diagnosis steps

• Check for any loose or damaged wiring and connectors in the drive motor circuit.

• Inspect the power inverter module for faults.

• Test the drive motor for proper operation.

Repair procedures

• Repair or replace damaged wiring or connectors.

• Replace the power inverter module if faulty.

• Replace the drive motor if necessary.

Tools required

• Multimeter

• OBD-II scanner

• Insulation resistance tester

Estimated repair cost

$500 - $1500

Difficulty level

Moderate

Commonly affected vehicles

• Chevrolet Volt

• Nissan Leaf

• Tesla Model S

Preventive measures

• Regular maintenance of the electric drive system

• Ensure proper insulation of wiring

• Routine checks of the power inverter module

Error code type

Electric Drive System Issue

User experience recommendations

• Avoid driving the vehicle until repaired to prevent further damage.

• Consult with a certified technician for an accurate diagnosis.

Warranty information

Check with the vehicle manufacturer for warranty coverage on electric drive components.

Historical data

This code has become more prevalent with the increase in electric and hybrid vehicles, highlighting the importance of maintaining electric drive systems.

Urgency level

High – This issue can affect vehicle performance and safety.

Testing conditions

• Vehicle should be stationary.

• Ensure the battery is fully charged.

Component location

The drive motor is typically located near the front or rear axle, depending on the vehicle's drivetrain layout.

FAQs

Q: What happens if I ignore this code?
A: Ignoring this code can lead to reduced vehicle performance and potential damage to the electric drive system.

Q: Can I drive my car with this code?
A: It's not recommended to drive with this code active. It may lead to further damage and affect vehicle safety.

Optional diagnostic gear

Tools that may help diagnose P2C70

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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