What Does C0374 Mean?
C0374 indicates a general malfunction within the chassis control system, typically related to the electronic stability control (ESC), anti-lock braking system (ABS), or traction control system (TCS). This is a non-specific fault code that suggests the control module has detected an abnormality in one or more chassis control components or communication networks, but has not isolated the exact failure. The code requires further diagnosis to identify the specific component or circuit causing the system malfunction.
Common Causes
35%
Faulty wheel speed sensor or damaged sensor wiring/connector causing erratic or no signal
25%
Low battery voltage or charging system issues causing module voltage drop during system operation
20%
ABS/ESC hydraulic control unit internal fault or solenoid valve malfunction
15%
CAN bus communication error or wiring issues between chassis control modules
5%
Steering angle sensor misalignment or internal failure affecting stability control calibration
Diagnostic Steps
1
Step 1: Perform visual inspection of all four wheel speed sensors and wiring harnesses for physical damage, corrosion, or loose connections. Check sensor air gaps and ensure tone rings are clean and undamaged.
2
Step 2: Using a multimeter, test battery voltage (should be 12.4-12.8V engine off, 13.5-14.8V running) and check all chassis module ground connections for resistance below 0.5 ohms to known good ground.
3
Step 3: Access live data stream and monitor all four wheel speed sensor signals while rotating each wheel by hand or during a test drive, looking for erratic readings, dropouts, or sensors reading zero when wheels are rotating.
4
Step 4: Check for CAN bus communication errors by monitoring network status and voltage levels on CAN-High (2.5-3.5V) and CAN-Low (1.5-2.5V) circuits at the ABS/ESC module connector.
5
Step 5: If all sensors and communication are normal, check steering angle sensor calibration status and perform steering angle sensor relearn procedure according to manufacturer specifications.
6
Step 6: Clear codes and perform test drive including full lock turns in both directions and moderate braking to verify system operation and confirm repair.
Estimated Repair Cost
$100 - $1,200
Parts + labor, varies by vehicle and location
C0374 indicates a general malfunction within the chassis control system, typically related to the electronic stability control (ESC), anti-lock braking system (ABS), or traction control system (TCS). This is a non-specific fault code that suggests the control module has detected an abnormality in on...
The most common cause of C0374 (General System Malfunction) is: Faulty wheel speed sensor or damaged sensor wiring/connector causing erratic or no signal
Typical repair costs for C0374 range from $100 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle is generally safe to drive with caution, but ABS, traction control, and stability control systems may be disabled or operating in reduced functionality mode. Avoid aggressive maneuvers, drive at reduced speeds in adverse weather conditions, and repair promptly as braking distance may increase and vehicle stability may be compromised during emergency situations.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to C0374 to identify the root cause.
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Quick Info
Category
Chassis
System
Chassis Control System (ABS/ESC/TCS)
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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