Code Definition

C1617 — Invalid Engine Speed

System: Chassis  |  Type: Manufacturer-Specific  |  Make: Hyundai

About C1617

C1617 is a manufacturer-specific chassis diagnostic trouble code recorded for Hyundai 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.

C1617 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

The Electronic Stability Program (ESP) or Electronic Brake Control Module (EBCM) receives engine speed information from the Engine Control Module (ECM) via the CAN network to coordinate stability and traction control functions. DTC C1617 is set when the ESP module detects that the received engine speed signal is implausible, out of the expected range, inconsistent with vehicle speed and wheel speed data, or missing intermittently. This indicates that the engine speed information cannot be reliably used for ESP control. When this code is active the ESP and traction control warning lamps usually...

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