C2194 - Engine Speed Signal Error

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3    What is this?
Table of contents

C2194 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

How do I fix code C2194?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Cost of diagnosing the C2194 code

Labor: 1.0

The cost of diagnosing the C2194 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

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

C2194 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 - Engine Speed Signal Error - AutoCodes.com

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