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Code C003E

Quick reference

C003E at a glance

Plain-language meaning
The car's computer is having trouble getting information from the sensor that tells how fast the back wheel is spinning.
Urgency
Moderate – While the vehicle may still be drivable, safety features like ABS may not function properly.
Difficulty
Moderate
System
Sensor Issue
Tools mentioned
Multimeter, OBD-II scanner, Basic hand tools

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

Laymans terms

The car's computer is having trouble getting information from the sensor that tells how fast the back wheel is spinning.

Explanation

The rear wheel speed sensor is responsible for providing data on the speed of the rear wheels to the vehicle's control systems. If there's an issue with the supply, it means the sensor might not be getting the power or signals it needs to function properly.

Technical description

The C003E code indicates a problem with the electrical supply to the rear wheel speed sensor. This sensor is crucial for systems like ABS and traction control, as it measures the speed of the wheel and sends this data to the vehicle's computer. An interruption in the supply can lead to incorrect readings or no readings at all.

Symptoms

• ABS warning light on

• Traction control warning light on

• Inoperative speedometer

Common Causes

• Faulty wheel speed sensor

• Damaged wiring or connectors

• Blown fuse or faulty relay

Glossary

ABS: Anti-lock Braking System

OBD-II: On-Board Diagnostics, Second Generation

Diagnosis steps

• Check for any visible damage to the sensor or wiring.

• Use a multimeter to test the sensor's electrical supply.

• Inspect fuses and relays related to the ABS system.

Repair procedures

• Replace the faulty wheel speed sensor.

• Repair or replace damaged wiring or connectors.

• Replace blown fuses or faulty relays.

Tools required

• Multimeter

• OBD-II scanner

• Basic hand tools

Estimated repair cost

$100 - $300

Difficulty level

Moderate

Commonly affected vehicles

• Ford F-150

• Chevrolet Silverado

• Toyota Camry

Preventive measures

• Regularly inspect wheel speed sensors and wiring.

• Ensure fuses and relays are in good condition.

• Avoid driving through deep water which can damage sensors.

Error code type

Sensor Issue

User experience recommendations

• Do not ignore ABS warning lights.

• Have the vehicle inspected by a professional if unsure.

• Regular maintenance can prevent such issues.

Warranty information

Check with the vehicle manufacturer for specific warranty coverage on sensors.

Historical data

This code has been reported in vehicles with high mileage or those exposed to harsh environmental conditions.

Urgency level

Moderate – While the vehicle may still be drivable, safety features like ABS may not function properly.

Testing conditions

• Vehicle stationary

• Ignition on, engine off

Component location

The rear wheel speed sensor is typically located near the wheel hub or brake rotor at the rear of the vehicle.

FAQs

Q: Can I drive with a C003E code?
A: While you can drive, it's not recommended as safety systems like ABS may not work properly.

Q: How do I reset the ABS light?
A: Fix the underlying issue first, then use an OBD-II scanner to clear the code.

Optional diagnostic gear

Tools that may help diagnose C003E

FOXWELL Multi-System Scanner diagnostic tool illustration

Pro · Four-system diagnostics

FOXWELL Multi-System Scanner

A handheld scanner aimed at engine, transmission, ABS, and airbag diagnostic work.

Chassis and ABS faults usually need a scanner that can read brake-system data directly.

View on Amazon
EPAuto 1/2" Torque Wrench diagnostic tool illustration

Universal · Torque wrench

EPAuto 1/2" Torque Wrench

Useful when reassembly torque matters for wheel, suspension, and under-hood fasteners.

Useful when wheel, hub, or suspension hardware needs correct reassembly torque.

View on Amazon
MaxxHaul Vehicle Ramps diagnostic tool illustration

Universal · Drive-on ramps

MaxxHaul Vehicle Ramps

Helpful for safer access underneath the vehicle during exhaust, EVAP, and underbody inspection work.

Helpful for safer access during underbody inspection work.

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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