C2190

Code

Generic C — Chassis

Chassis Control Module Internal Fault

Brand: Generic

Type: C — Chassis

Views: UK: 18 EN: 13 RU: 11

AI status

Completed

ready

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Page language: EN

Causes

Internal hardware or electronic component failure inside the CCM
Corrupted or failed module software/firmware or EEPROM
Intermittent or low supply voltage to the module (battery, charging system, fuses, wiring)
Poor ground or high-resistance ground connection to the CCM
CAN/LIN network errors or loss of communications with other modules
Moisture, corrosion, physical impact or connector damage at the CCM

Symptoms

ABS, traction control, or stability control warning lamp illuminated
Reduced or disabled chassis control functions (ABS/ESC/TC)
Stored CCM internal fault and possibly multiple related codes
Intermittent or permanent loss of communication with CCM on a scan tool
Unusual or inconsistent behavior of braking or stability systems
Possible limp-home behavior or restricted vehicle performance

What to check

Read all stored codes and freeze frame data from all modules with a capable scan tool
Check battery state-of-charge and system voltage (key on and cranking)
Inspect CCM power and ground fuses, fusible links and relay circuits
Visually inspect CCM connector(s) for corrosion, bent pins, water intrusion, or damage
Check chassis harness for recent repair, collision damage, or pinched wiring
Scan CAN/LIN bus for other module communication errors (U-codes) or bus fault counters

Signal parameters

CCM supply voltage (V) and key-on vs cranking voltage
CCM ground resistance or voltage drop to chassis
Presence and frequency of CCM CAN messages (message IDs, uptime)
CAN bus voltage and differential waveform (A/B) with scope
Internal module CRC/checksum status or EEPROM error counters (if available)
Module watchdog/reset count or internal fault counters

Diagnostic algorithm

Connect a factory-level or bi-directional scan tool and record C2190 plus all related codes and freeze frame data.
Verify battery voltage ≥12.4 V (resting) and charging system output. Charge or replace battery if low and retest.
Inspect CCM fuses/relays and measure supply voltage at CCM power pins with key ON and engine cranking.
Check and clean CCM ground(s). Measure voltage drop between CCM ground and chassis while cranking (
Visually inspect CCM connectors and harness for corrosion, water ingress, pin damage, or loose terminals; repair as needed.
Monitor CAN bus traffic with a scan tool/scope. Confirm CCM is transmitting/receiving messages and check for bus errors or stuck dominant lines.
If supply/ground/CAN and connectors are good, attempt to clear the fault and recreate conditions. Note whether C2190 returns immediately or intermittently.
If code returns and all external checks pass, check for available software updates or reflash/reprogramme CCM per OEM procedure.
If reflashing fails or is not applicable, consider replacement of CCM. After replacement, program and configure the new module and re-run functional tests.
After repair, verify no related codes remain, confirm proper operation of ABS/TC/ESC systems, and road-test to ensure fault does not recur.

Likely causes

Low or unstable battery voltage or blown/loose CCM fuse
Poor ground or connector corrosion at CCM
CAN bus communication fault to the CCM
Software/firmware corruption requiring reflash
Internal CCM hardware failure requiring replacement

Fault status

⚠️ Status

Chassis Control Module internal fault detected — module hardware, memory, or internal diagnostics reported an error. External power/communications should be verified before module replacement.

🔴 Repair difficulty: Hard

⏱️ Diagnostic time: 2-4 hours