P1120 2006 Toyota Prius Code - Coolant Flow Control Valve Position Sensor Circuit
Quick Answer
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. Common causes include Coolant Flow Control Valve, Faulty Coolant Flow Control Valve Position Sensor, Coolant Flow Control Valve Position Sensor harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1120 2006 Toyota Prius indicates Coolant Flow Control Valve Position Sensor Circuit.
- Common causes
- Common causes include Coolant Flow Control Valve, Faulty Coolant Flow Control Valve Position Sensor, Coolant Flow Control Valve Position Sensor harness is open or shorted.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1120 2006 Toyota Prius Description
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 CHS tank in accordance with the operating conditions of the system.
The water valve consists of a water valve, valve position sensor, and valve control motor. The potentiometer, which is coupled coaxially to the water valve, converts the valve position into voltage and transmits it to the ECM in the form of a position signal.
What are the Possible Causes of the DTC P1120 2006 Toyota Prius?
- 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 to Fix the DTC P1120 2006 Toyota Prius?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1120 2006 Toyota Prius code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P1120 2006 Toyota Prius Code
1. What are the common symptoms of OBDII code P1120 in a 2006 Toyota Prius?
- Common symptoms include engine overheating, poor fuel efficiency, rough idling, and a check engine light illuminated on the dashboard.
2. What does the OBDII code P1120 indicate in a 2006 Toyota Prius?
- The code P1120 indicates a problem with the Coolant Flow Control Valve Position Sensor Circuit in the vehicle.
3. What are the possible causes of OBDII code P1120 in a 2006 Toyota Prius?
- Possible causes include a faulty coolant flow control valve, a malfunctioning position sensor, wiring issues, or a problem with the engine control module (ECM).
4. How can I diagnose the issue related to OBDII code P1120 in my 2006 Toyota Prius?
- You can use a scan tool to read the trouble code, inspect the coolant flow control valve and its sensor, check the wiring for any damage, and perform continuity tests to identify the faulty component.
5. Can I drive my 2006 Toyota Prius with the OBDII code P1120?
- It is not recommended to drive the vehicle with this code present, as it can lead to engine overheating and potential damage. It is best to address the issue promptly.
6. How can I repair OBDII code P1120 in my 2006 Toyota Prius?
- Repair options include replacing the coolant flow control valve, replacing the position sensor, repairing any damaged wiring, or reprogramming the ECM if needed.
7. Are there any tips for preventing OBDII code P1120 in a 2006 Toyota Prius?
- Regular maintenance, such as coolant system checks and timely repairs of any cooling system issues, can help prevent the occurrence of this code.
8. How much does it cost to repair OBDII code P1120 in a 2006 Toyota Prius?
- The cost of repair can vary depending on the exact cause of the issue, but it may range from $200 to $600 including parts and labor.
9. Can I reset the OBDII code P1120 in my 2006 Toyota Prius without fixing the underlying issue?
- While you can clear the code with a scan tool, it will likely reappear if the underlying issue is not resolved. It is recommended to address the root cause of the problem.
10. Is it possible to drive my 2006 Toyota Prius with a faulty Coolant Flow Control Valve Position Sensor Circuit?
- It is not advisable to drive the vehicle with this issue, as it can lead to engine performance issues and potential overheating, which may cause further damage.
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