Check Engine Light, dealership quoted me for a coolant control valve replacement.
Hello,
The dealership ran the code on my check engine light and I have a problem with the coolant control valve. They are quoting me a repair of $650. Is this repair crucial to be done immediately? Are you able to provide a better quote?
The dealership ran the code on my check engine light and I have a problem with the coolant control valve. They are quoting me a repair of $650. Is this repair crucial to be done immediately? Are you able to provide a better quote?
My car has 128000 miles.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
Hi there, thanks for writing in. The coolant control valve controls the flow of coolant to the engine, the storage tank, and the heater core. A fault with this valve could prevent proper engine starting and reduce your fuel economy or even cause the engine to stumble, not to mention the lack of heat inside the car during a cold morning.
A code stored that points to the valve does not necessarily mean that the valve has failed; what if the wire is broken that powers the valve? I strongly suggest acquiring a qualified technician to perform an inspection for a second opinion in order to avoid replacing unnecessary parts. YourMechanic has several available technicians that can assist you with a Check Engine Light inspection and provide you with a detailed estimate and direction of repair. Good luck.
How to Identify and Fix Common car Problems ?
Our sources include academic articles, blog posts, and personal essays from experienced mechanics :
If your Prius doesn`t have any heat or has codes P1121, P1120, P1122 or P1123, the likely cause of both your lack of heat and the check engine light/check hybrid system message is a stuck coolant flow control valve. This problems is more common on 2004-2007 Prii, but the system was used through 2009.
P1122 Throttle Position (TP) Sensor Circuit Intermittent Low Voltage.
If you notice a check engine light come on your Toyota Prius, it`s important to take note of what type of issue the light may be signaling. Some possible causes are: A malfunctioning sensor or sensor connector, engine or transmission failure, low coolant level, a bad battery or several other reasons.
If the valve changes position and no changes or slow changes in temperature occur, it will set the P1121 code. The only way to resolve this problem is to replace the coolant flow valve and flush the system. You may have additional codes (P1151, P1150) if the coolant storage tank is malfunctioning.
Code P0420 indicates that the catalytic converter is not functioning efficiently, therefore increasing the output of harmful pollutants by the vehicle.
When the P0420 trouble code appears, your catalytic converter is not performing the way it used to. The rear O2 sensor monitors the converter and the amount of oxygen that is stored inside. If the converter cannot keep enough oxygen, the sensor will detect that and set the trouble code.
The Check Engine Light may illuminate with a fault code P1121 stored. It is commonly caused by a failed three way coolant control valve. Valve replacement is recommended if this occurs.
What the P1116 code means. P1116 is a OBD-II manufacturer-specific code for a voltage issue with the engine coolant sensor in that the signal being sent to the engine computer is not within the range set by the manufacturer.
If your check engine light is flashing in your 2021 Toyota Prius, we exceedingly advise not to drive the vehicle and schedule Toyota service today. Below is a list of the most common reasons your check engine light can come on: New Spark Plugs or Plug Wires are necessary for your 2021 Toyota Prius.
If the check engine light illuminates, it will either blink or remain constantly illuminated, depending on the problem. A blinking light, or in some cars a red light instead of a yellow or orange light, indicates a problem that needs immediate attention. Either way, you should have the vehicle checked by a mechanic.
The easiest way to reset your throttle position sensor is to unhook the negative cable from your battery for up to five minutes or to remove the fuse for your engine control module.
The coolant storage tank helps reduce emissions and increase fuel economy (more on how below). But because the Prius has this storage tank, it needs something called a coolant flow control valve (aka water control valve) to regulate the flow of coolant in and out of the storage tank.
Inverter failure with code P0A08/P0A09
The Prius has warning lights on the dash and may or may not drive, but diagnostic code P0A08 (not to be confused with hybrid battery code P0A80) and/or P0A09 code are logged. These codes can mean that the hybrid inverter has failed OR the 12v battery is weak/improperly connected.
P2135 is a diagnostic trouble code (DTC) for “Throttle/Pedal Position Sensor/Switch A / B Voltage Correlation”.
Inverter failure with code P0A08/P0A09
The Prius has warning lights on the dash and may or may not drive, but diagnostic code P0A08 (not to be confused with hybrid battery code P0A80) and/or P0A09 code are logged. These codes can mean that the hybrid inverter has failed OR the 12v battery is weak/improperly connected.
Reading the description in the manual, the P1116 code indicates that there is a problem with the coolant tank outlet sensor.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
Check Engine Light, dealership quoted me for a coolant control valve replacement.
ANSWER : Hi there, thanks for writing in. The coolant control valve controls the flow of coolant to the engine, the storage tank, and the heater core. A fault with this valve could prevent proper engine starting and reduce your fuel economy or even cause the engine to stumble, not to mention the lack of heat inside the car during a cold morning.
A code stored that points to the valve does not necessarily mean that the valve has failed; what if the wire is broken that powers the valve? I strongly suggest acquiring a qualified technician to perform an inspection for a second opinion in order to avoid replacing unnecessary parts. YourMechanic has several available technicians that can assist you with a Check Engine Light inspection and provide you with a detailed estimate and direction of repair. Good luck.
Abs light, emergency brake light, steering wheel assist light, engine light, EPC light, traction control light
ANSWER : Hello, thank you for writing in. The vehicle does utilize a lot of the same sensors for these systems. Are there any other codes that are coming up when this code appears? If so you will want to take these into consideration when processing the repair and making a diagnosis. The module may be bad, and replacing it should fix the problem. The lights should turn off once the main computer recognizes the new module and the sensors sync up. If you believe the sensors need to be cleaned you may do so. Do as minimal as possible to make sure you are not damaging the sensor or disrupting the wiring inside. A bad connection would make the lights stay on. With so many lights that are effected by the module being illuminated, the module is likely bad or does not have a connection. Check the connection first and then resort to replacing the unit. For more help with these electrical tests, contact our service department.
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ANSWER : Hello there, you have a long series of issues going on with your 2013 Hyundai Sonata. If you keep getting a repeating oil light on than there is likely a fault in that system.
Since this fault has lasted after the engine was replaced it could be a oil pressure sensor, wiring harness fault, ECU fault, oil pump, oil strainer clogged, or low oil pressure.
To diagnose this issue properly you need a complete vehicle inspection to start from square one and identify the root cause of all this.
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ANSWER : Hi there. What you received from the parts store was a code retrieval, not a diagnostic. The codes are set when a fault is detected against normal operating parameter. The computer does not know what caused the fault, only that the fault meets the criteria for this code to set. There could be a problem in the wire harness, converter, or the ECM. The code and data are needed to properly assess the direction that a diagnosis needs. I strongly suggest having a qualified technician perform an inspection to avoid replacing unnecessary parts. Your Mechanic has several available technicians that can assist you with a check engine light inspection.
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