• Increased steering effort
• Steering feels different at different speeds
• Warning light on the dashboard
• Faulty steering actuator
• Wiring issues such as short circuits
• Malfunctioning steering control module
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics, Second Generation
• C0621
• C0623
This code means there's a problem with the car's power steering system, which helps you turn the wheel easily. The car's computer is saying that the part that controls how easy it is to turn the wheel is not working right.
The C0622 code indicates that there is a high voltage condition in the circuit that controls the variable effort steering, which adjusts the steering effort based on driving conditions.
The C0622 code is triggered when the powertrain control module (PCM) or the steering control module detects a high voltage condition in the variable effort steering lock or safety actuator control circuit. This system is designed to adjust the steering effort required based on vehicle speed and other parameters. A high voltage condition may indicate a wiring issue, a faulty actuator, or a malfunctioning control module.
• Scan the vehicle for OBD-II codes.
• Inspect the wiring and connectors related to the steering actuator.
• Test the steering actuator for proper operation.
• Repair or replace damaged wiring.
• Replace the faulty steering actuator.
• Replace or reprogram the steering control module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $600
Moderate
• Chevrolet Impala
• GMC Sierra
• Cadillac Escalade
• Regularly inspect and maintain the steering system.
• Avoid harsh driving conditions that stress the steering components.
• Ensure electrical connections are secure and free of corrosion.
Sensor Issue
• Have the steering system inspected by a professional.
• Avoid driving at high speeds if steering feels unusual.
• Regularly check for warning lights on the dashboard.
Check with the vehicle manufacturer for specific warranty coverage related to the steering system.
This code has been associated with vehicles equipped with variable effort steering systems introduced in the late 1990s and early 2000s.
Moderate – It's important to address this issue to ensure safe and comfortable steering.
Driving with impaired steering can be dangerous. Address this issue promptly to maintain vehicle safety.
• Vehicle stationary and ignition on
• Vehicle in motion at various speeds
The variable effort steering actuator is typically located on or near the steering column or rack.
Q: Can I drive with the C0622 code?
A: It's not recommended to drive with this code active, as it can affect steering safety and performance.
Q: How can I reset the C0622 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is fixed, it should not return.