P1173 (Volkswagen, Audi, Skoda, Seat) Throttle Position Sensor 2 - Input Level Too High
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P1173 – OBD-II Trouble Code Technical Description
Trouble code P1173 indicates that the input signal level of the throttle position sensor 2 is too high in Volkswagen, Audi, Skoda, Seat vehicles.
What does the fault code mean P1173?
Trouble code P1173 indicates that the input signal level of the throttle position sensor 2 is too high in Volkswagen, Audi, Skoda, Seat vehicles. This means that the engine management system has detected that the signal from the throttle position sensor 2 exceeds acceptable limits.
Possible reasons
Some possible reasons for the P1173 trouble code:
- Faulty throttle position sensor (TPS): The TPS sensor may be bad or malfunctioning, causing it to produce incorrect throttle position signals.
- Incorrect TPS sensor installation: If the TPS sensor is not installed correctly or is in the wrong position, it may cause incorrect signals to be output.
- Damaged wiring or connectors: The wiring connecting the TPS sensor to the engine control module (ECU) may be damaged or shorted, causing incorrect signals.
- Problems with the engine control module (ECU): A malfunction or failure in the engine control module may cause erroneous signals from the TPS sensor.
- Mechanical problems with the throttle valve: A stuck or damaged throttle valve may cause the TPS sensor to read the position incorrectly.
- Problems with the vacuum system: Problems with the vacuum system, such as leaks or blockages, can cause the throttle valve to not function properly and therefore cause incorrect signals from the TPS sensor.
These are just a few of the possible causes, and it is recommended that you contact a qualified auto mechanic or vehicle diagnostic specialist for an accurate diagnosis.
What are the symptoms of a fault code? P1173?
Symptoms for DTC P1173 may include the following:
- Loss of power: The vehicle may experience a loss of power or respond more slowly to the gas pedal due to improper throttle operation.
- Unstable engine performance: The engine may experience rough operation, including rough or shaking idle, due to improper operation of the throttle control system.
- Gear shifting problems: Gearshift problems such as jerking or hesitation may be noticed, especially when the throttle is activated.
- Increased fuel consumption: Due to improper throttle operation and improper fuel-air mixing, the vehicle may consume more fuel than normal.
- Illuminates the Check Engine indicator: The appearance of the Check Engine Light on your dashboard is a major sign of an engine management system problem, including code P1173.
These symptoms may occur to varying degrees depending on the specific problem and its effect on engine performance. If you notice any of the above symptoms, it is recommended that you contact a qualified auto mechanic to diagnose and repair the problem.
How to diagnose a fault code P1173?
The following steps are recommended to diagnose DTC P1173:
- Scanning error codes: Using an OBD-II scanner, read the error codes from the Engine Control Module (ECU) and verify that code P1173 is present.
- Checking the status of the throttle position sensor (TPS): Check the TPS sensor for failure, miscalibration or malfunction. This can be done using a multimeter or special tools for car diagnostics.
- Checking wiring and connectors: Check the condition of the wiring connecting the TPS sensor to the engine control module. Make sure the wiring is intact and connections are secure.
- Checking the throttle valve: Check the condition and operation of the throttle valve. Make sure it moves freely without binding or blocking.
- Engine Control Module (ECU) Diagnostics: Test and diagnose the engine control module to rule out possible problems with the ECU.
- Checking the vacuum system: Check the condition of the vacuum hoses and valves associated with the throttle valve. Make sure the vacuum system is working properly and has no leaks.
- Checking other sensors and components: Check the condition of other sensors and components that may affect the throttle valve and engine management system.
After the diagnosis is carried out, it is necessary to make the necessary repairs or replace the components that are causing the problem. After this, you need to clear the error codes using an OBD-II scanner and test the car to ensure that the problem is resolved.
Diagnostic errors
When diagnosing DTC P1173, the following errors may occur:
- Misinterpretation of data: The error may involve misunderstanding or misinterpreting data received from the OBD-II scanner or other diagnostic tools.
- Incorrect component diagnosis: Incorrect identification or diagnosis of components related to the engine management system may lead to the incorrect determination of the cause of the P1173 code.
- Skipping important steps: Skipping certain steps in the diagnostic process, such as checking wiring or testing sensors, may result in missing the root cause of the problem.
- Insufficient knowledge or experience: Insufficient knowledge or experience in vehicle diagnostics may lead to incorrect conclusions or erroneous interpretation of data.
- Faulty tools: Using faulty or inappropriate diagnostic tools can also lead to errors and inaccurate results.
To avoid these errors, it is important to have a good understanding of the engine management system, follow the diagnostic process step by step, use the proper tools, and, if necessary, seek assistance from qualified technicians.
How serious is the fault code? P1173?
The severity of the P1173 trouble code can vary depending on the specific cause of it and how the vehicle reacts to the problem. Overall, this is a fairly serious code that indicates problems with the throttle position sensor or its signals, which can cause the engine to not operate properly. Although the vehicle may continue to operate with this error code, the following may occur:
- Loss of power and efficiency: Improper operation of the throttle position sensor can result in loss of engine power and efficiency.
- Increased fuel consumption: Improper management of the fuel/air mixture can result in increased fuel consumption.
- Increased engine wear: Improper operation of the engine can lead to increased wear and deterioration in overall condition.
- Limitation of functions and operating modes: In some cases, the engine management system may limit engine functions or operating modes to prevent possible damage.
Therefore, although the vehicle may continue to drive with a P1173 code, it is recommended to resolve this issue as soon as possible to avoid possible negative effects on engine performance and overall vehicle reliability.
What repair will help eliminate the code? P1173?
Resolving error code P1173 may require the following steps, depending on the specific cause of the problem:
- Replacing the Throttle Position Sensor (TPS): If the TPS sensor is faulty or out of order, it should be replaced with a new original or high-quality analogue.
- TPS Sensor CalibrationNote: In some cases, the TPS sensor may require calibration after installation. This may be necessary to ensure that the sensor is operating properly and meeting manufacturer specifications.
- Checking and replacing wiring: Check the condition of the wiring connecting the TPS sensor to the engine control module. If necessary, replace damaged or broken wires.
- Diagnosis and replacement of the engine control module (ECU): If the problem is related to a malfunction of the engine control module itself, it may need to be replaced or repaired.
- Checking and servicing the vacuum system: Check the condition of the vacuum hoses and valves associated with the throttle valve. Make sure the vacuum system is working properly and has no leaks.
Once the repair or replacement is completed, you will need to clear the error codes using an OBD-II scanner and test the vehicle to ensure the problem has been resolved.
