C2000

Code

Generic C — Chassis

Manufacturer Controlled DTC

Brand: Generic

Type: C — Chassis

Views: UK: 37 EN: 145 RU: 30

AI status

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Page language: EN

Causes

Fault stored by ABS/ESC/steering control module
Intermittent or failed wheel speed, yaw rate, or steering angle sensor
Damaged wiring or poor connector connection to sensors or module
Loss of power or poor ground to the control module
CAN/LIN network communication errors
Internal module fault or software failure

Symptoms

ABS, ESC, or traction control warning lamp illuminated
Reduced or disabled stability/traction control functions
Possible drivability complaints if linked to other systems
Inconsistent brake feel or ABS activation (on test)
Loss of certain sensor data on scanner (e.g., wheel speed, yaw rate)

What to check

Scan vehicle and record all stored and pending codes and freeze frame data
Check for related codes in ABS, chassis, and network modules
Visually inspect fuses and relays that supply the ABS/ESC module
Inspect wiring harnesses and connectors at the module and sensors for corrosion, damage, or looseness
Verify battery voltage and charging system condition
Check module power and ground circuits for proper voltage and low resistance

Signal parameters

Module supply voltage: ~12 V with ignition on (nominal battery voltage)
Module ground: low resistance to chassis (
Wheel speed sensor: pulsed AC or VR signal amplitude and frequency increasing with wheel speed
Hall-effect sensors: square wave 0–5 V or 0–12 V depending on vehicle
Yaw rate sensor: near 0 deg/s at rest, smooth proportional change during rotation
Steering angle sensor: zero value at straight-ahead, consistent change with steering input

Diagnostic algorithm

Connect a diagnostic scanner, read and record all codes (including in other modules) and freeze frame data.
Clear codes and attempt to re-run the fault to determine if intermittent. If code returns, continue.
Perform visual inspection of ABS/ESC module connectors, sensor connectors (wheel speed, yaw, steering angle), and wiring for damage or corrosion.
Verify battery voltage and inspect fuses/relays supplying the chassis control module; repair as needed.
With ignition on, check module supply voltage and ground continuity. Repair poor power/ground connections.
Monitor live sensor data while rotating wheels or performing a low-speed road test (with safety precautions) to confirm proper sensor signals and response.
Use a DMM or oscilloscope to verify sensor waveforms/voltages at the sensor and at the module connector to isolate wiring vs sensor vs module faults.
Check CAN/LIN network health: verify bus voltages, message presence, and scan for communication errors. Repair wiring or replace modules as indicated.
If wiring and sensors are good but fault persists, consult manufacturer service information for module reprogramming or known bulletin, then consider module replacement.
After repairs, clear codes and verify system functionality and absence of returned faults via road test and re-scan.

Likely causes

Corroded or disconnected sensor connector (wheel speed or steering angle)
Open or shorted sensor harness to module
Blown fuse or weak battery affecting module supply
Poor module ground or chassis corrosion near mounting point
Faulty ABS/ESC control module
Intermittent CAN bus failure due to short, high resistance, or damaged shielding

Fault status

⚠️ Status

This code is typically stored by an ABS/ESC control module and may set the ABS/ESC warning lamp. It can be active, pending, or stored as a historical fault depending on occurrence. Consult freeze frame and related codes for context.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-3.0 hours