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 AmazonEasy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the computer that helps you steer your car easily. It's like when a video game controller stops working right.
The C1123 code indicates an issue with the processor inside the power steering control module, which is responsible for managing the power steering system.
The power steering control module processor is responsible for processing inputs from various sensors and controlling the power steering system accordingly. A fault in this processor can lead to improper steering assistance.
• Difficulty steering the vehicle
• Steering wheel feels heavy
• Warning light on the dashboard
• Faulty power steering control module
• Wiring issues or poor connections
• Software glitches in the control module
OBD-II: On-Board Diagnostics, a standardized system for vehicle diagnostics.
Control Module: A computer that controls various vehicle functions.
• Use an OBD-II scanner to confirm the code
• Inspect wiring and connections to the power steering control module
• Check for software updates or reflash the control module
• Replace the power steering control module
• Repair or replace damaged wiring
• Update or reflash the control module software
• OBD-II scanner
• Multimeter
• Screwdriver set
$200 - $800
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and maintain steering components
• Ensure software updates are applied
• Check wiring connections periodically
Control Module Issue
• Have the vehicle inspected by a professional
• Avoid driving if steering becomes difficult
• Keep up with regular maintenance
Check with the vehicle manufacturer for warranty coverage on control modules.
This code has been reported in vehicles with electronic power steering systems, particularly in models with known module issues.
High – Steering issues can affect vehicle control and safety.
Driving with compromised steering can be dangerous. Address this issue promptly to ensure safety.
• Vehicle at operating temperature
• Power steering system engaged
The power steering control module is typically located near the steering column or in the engine bay.
Q: Can I drive with a C1123 code?
A: It's not recommended, as steering issues can be dangerous. Have it checked as soon as possible.
Q: How can I reset the power steering control module?
A: Disconnecting the battery for a few minutes may reset the module, but it's best to address the underlying issue.
Pro · Four-system diagnostics
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
Universal · 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.
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Universal · Drive-on 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 AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.