P1122 2006 Toyota Prius Code - Coolant Flow Control Valve Position Sensor Circuit Low
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
- P1122 2006 Toyota Prius indicates Coolant Flow Control Valve Position Sensor Circuit Low.
- 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 P1122 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 P1122 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 P1122 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 P1122 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.
Need more information about the P1122 2006 Toyota Prius code?
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Frequently Asked Questions about P1122 2006 Toyota Prius Code
1. What are common symptoms of OBDII code P1122 in a 2006 Toyota Prius?
- Common symptoms include engine overheating, poor fuel economy, rough idling, and a decrease in engine performance.
2. What causes the OBDII code P1122 in a 2006 Toyota Prius?
- The code is typically triggered by a malfunction in the coolant flow control valve position sensor circuit, which may be caused by wiring issues, a faulty sensor, or a problem with the valve itself.
3. How can I diagnose the Coolant Flow Control Valve Position Sensor Circuit Low issue in my 2006 Toyota Prius?
- You can use an OBDII scanner to read the code and perform a visual inspection of the wiring and connectors related to the coolant flow control valve position sensor.
4. Can I drive my 2006 Toyota Prius with the P1122 code?
- It is not recommended to drive your Prius with the P1122 code as it can lead to engine overheating and potential damage. It's best to address the issue promptly.
5. What are the repair options for fixing OBDII code P1122 in a 2006 Toyota Prius?
- Repair options may include replacing the coolant flow control valve position sensor, repairing any damaged wiring or connectors, or replacing the coolant flow control valve if necessary.
6. Is it possible to reset the OBDII code P1122 in a 2006 Toyota Prius without fixing the issue?
- While you can clear the code with an OBDII scanner, it is not recommended to do so without addressing the underlying problem, as it may lead to further issues down the line.
7. How much does it typically cost to repair the Coolant Flow Control Valve Position Sensor Circuit Low issue in a 2006 Toyota Prius?
- The cost of repairs can vary depending on the exact cause of the issue, but it may range from $200 to $500, including parts and labor.
8. Can a DIY enthusiast fix the P1122 code in a 2006 Toyota Prius?
- If you have experience with automotive repairs and the necessary tools, you may be able to fix the issue yourself by following a repair manual or online guides.
9. Will the check engine light turn off automatically after fixing the P1122 code in a 2006 Toyota Prius?
- In most cases, once the underlying issue is fixed, the check engine light should turn off on its own after a few driving cycles. If it persists, you may need to clear the code with an OBDII scanner.
10. How important is it to address the OBDII code P1122 promptly in a 2006 Toyota Prius?
- It is crucial to address the P1122 code promptly to prevent potential engine damage, overheating, and further complications that may arise from the malfunctioning coolant flow control valve position sensor circuit.
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