Engine-Codes - Toyota - P1123 TOYOTA

P1123 TOYOTA - Coolant Flow Control Valve Position Sensor Circuit High

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3  What is this?
Table of contents

P1123 TOYOTA Possible Causes

  • Coolant Flow Control Valve
  • Faulty Coolant Flow Control Valve Position Sensor
  • Coolant Flow Control Valve Position Sensor harness is open or shorted
  • Coolant Flow Control Valve Position Sensor circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How is the P1123 TOYOTA code repair?

Start by checking 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.

What is the cost to diagnose the P1123 TOYOTA code

Labor: 1.0

The cost to diagnose the P1123 TOYOTA code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P1123 TOYOTA Meaning

This system uses an electric pump to supply hot coolant stored in the heat storage tank into the cylinder head of the engine, in order to optimize engine starting combustion and reduce the amount of unburned gas that is discharged while the engine is started. The water valve for the Coolant Heat Storage (CHS) system, which is located at the heater hoses, controls the coolant passages to the engine, heater core, and the Coolant Heat Storage tank in accordance with the operating conditions of the system.

More Information

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