Code Definition

C1022 — ESP CAN Communication With Engine Control Module Faulty

System: Chassis  |  Type: Manufacturer-Specific  |  Make: Mercedes-Benz

About C1022

C1022 is a manufacturer-specific chassis diagnostic trouble code recorded for Mercedes-Benz vehicles. It belongs to the C-prefix family of codes, which covers chassis, braking, steering, suspension, or stability-control faults.

Scanning & clearing: Chassis (C) codes are stored in the ABS, traction control, or stability-control modules. An enhanced or OEM-level scan tool is usually required to read and clear them.

C1022 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

On Mercedes Benz vehicles, the Electronic Stability Program (ESP) control module communicates with the Engine Control Module (ECM) over the powertrain CAN bus to coordinate torque reduction during stability interventions, traction control events, and ABS activation. Code C1022 is stored when the ESP control module detects that the expected CAN messages from the ECM are missing for longer than a calibrated timeout, contain corrupted data, or fail a plausibility check. The fault is generally triggered by CAN wiring damage, low system voltage that degrades bus signal integrity, or an internal com...

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