OBDII Code List

C2194 LEXUS - Engine Speed Signal Error

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Engine Control Module (ECM)
  • Engine Control Module (ECM) harness is open or shorted
  • Engine Control Module (ECM) circuit poor electrical connection
  • Faulty Tire Pressure Warning ECU

Possible symptoms

  • Tire Pressure Monitor System (TPMS) Warning Light ON
  • Anti-Lock Brake System (ABS) Warning Light ON

C2194 Lexus Description

The Tire Pressure Warning ECU receives an engine speed signal from the Engine Control Module (ECM). This Diagnostic Trouble Code (DTC) is stored upon entering test mode, and cleared when an engine speed signal of 1000 rpm is detected for 3 seconds or more. This DTC is output only in test mode.
OBDII Code C2194 Lexus - Engine Speed Signal Error -

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