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Code C0627

Quick reference

C0627 at a glance

Plain-language meaning
This code means that there's a problem with the sensor that helps control how easy or hard it is to turn the steering wheel. The sensor is sending a signal that's too high.
Urgency
Moderate – It is advisable to address this issue soon to ensure safe and comfortable driving.
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 there's a problem with the sensor that helps control how easy or hard it is to turn the steering wheel. The sensor is sending a signal that's too high.

Explanation

The vehicle's computer has detected that the signal from the variable effort steering sensor is higher than expected.

Technical description

The C0627 code indicates that the sensor responsible for adjusting the steering effort is outputting a voltage signal that is higher than the acceptable range. This sensor helps in adjusting the steering effort based on the vehicle's speed and other parameters to provide better handling and comfort.

Symptoms

• Steering feels too easy or too hard

• Steering warning light may be illuminated

• Variable steering effort not functioning properly

Common Causes

• Faulty variable effort steering sensor

• Wiring issues such as open or short circuits

• Faulty power steering control module

Glossary

Variable Effort Steering: A system that adjusts the steering wheel's resistance based on driving conditions.

Sensor Circuit High: Indicates that the sensor's output voltage is higher than expected.

Diagnosis steps

• Check for any other related codes and address them first.

• Inspect the wiring and connectors related to the variable effort steering sensor.

• Test the variable effort steering sensor for proper voltage and resistance.

Repair procedures

• Replace the faulty variable effort steering sensor.

• Repair or replace damaged wiring or connectors.

• Replace the power steering control module if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$150 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Chevrolet Tahoe

• GMC Yukon

• Cadillac Escalade

Preventive measures

• Regularly inspect steering system components.

• Ensure proper maintenance of electrical connections.

• Avoid harsh driving conditions that can strain the steering system.

Error code type

Sensor Issue

User experience recommendations

• Have the vehicle inspected by a professional if steering feels unusual.

• Avoid driving at high speeds until the issue is resolved.

Warranty information

Check with the vehicle manufacturer for warranty coverage on steering components.

Historical data

This code has been associated with issues in vehicles equipped with variable effort steering systems, particularly in GM models.

Urgency level

Moderate – It is advisable to address this issue soon to ensure safe and comfortable driving.

Testing conditions

• Vehicle should be at operating temperature.

• Test should be conducted on a flat, level surface.

Component location

The variable effort steering sensor is typically located on or near the steering column or integrated into the steering rack.

FAQs

Q: Can I drive with a C0627 code?
A: It's possible to drive, but the steering may not respond as expected. It's best to have it checked soon.

Q: How does the variable effort steering work?
A: It adjusts the steering effort based on speed and other factors to improve handling and comfort.

Optional diagnostic gear

Tools that may help diagnose C0627

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.

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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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