What is Code P2135? A Guide to Understanding this Common Diagnostic Trouble Code

Code P2135 is a generic trouble code that indicates an issue with the Throttle/Pedal Position Sensor/Switch “A” / “B” Voltage Correlation. This code is typically triggered when the Engine Control Module (ECM) detects a discrepancy in the voltage signals between the two throttle position sensors. This can be caused by a malfunction within either of the two sensors, an issue with the wiring or connectors, or even a malfunctioning ECM. If this code is present, it will cause the Check Engine Light to illuminate and should be addressed immediately to prevent further damage to your vehicle.

What is Code P2135?

Code P2135 is a diagnostic trouble code (DTC) that indicates a problem with the throttle/pedal position sensor circuit in an automobile. This code can be identified when the vehicle’s on-board diagnostics system detects an issue with the throttle position sensor (TPS). This code can cause a variety of symptoms, including poor acceleration, engine stalling, and a check engine light.

Symptoms of P2135

When Code P2135 is triggered, the vehicle may experience poor acceleration and stalling. Other common symptoms include a check engine light illuminating on the dashboard and decreased power output from the engine. In some cases, drivers may also notice a decrease in fuel economy due to reduced efficiency in the combustion process.

Causes of P2135

Code P2135 is typically caused by one of three issues: a malfunction in the throttle/pedal position sensor circuit, a faulty throttle/pedal position sensor, or wiring issues. In some cases, corrosion or an open wire can also trigger this code. It is important to note that these issues can be difficult to diagnose because they are often intermittent and hard to replicate in certain conditions.

How to Diagnose Code P2135?

To diagnose Code P2135, you will need an OBDII scanner and a voltage meter. The first step is to check your computer for trouble codes using the OBDII scanner; this will allow you to determine whether or not your vehicle has any stored codes related to this issue. Once you have identified any possible codes, you should then check all of your connectors and wiring harnesses for any signs of corrosion or damage. After checking all of these components, you should then test your throttle position sensor (TPS) for proper operation by performing a voltage test on it using your voltage meter.

Common Problems Related to Code P2135 in Automobiles

When it comes to problems related to Code P2135 in automobiles, one of the most common causes is faulty sensors and connectors as well as corroded or open wires. In order to prevent triggering this code, it is important that regular maintenance be performed on all components related to your car’s electronic systems such as the TPS circuit and wiring harnesses. Regularly inspecting these components for signs of wear and tear will help ensure that they are functioning properly at all times.

What is Code P2135?

Code P2135 is a diagnostic trouble code (DTC) that indicates a problem with the throttle or pedal position sensor. This sensor monitors the angle of the throttle plate and sends a signal to the engine control module (ECM). If there is an issue with the sensor, it can cause other problems such as reduced engine performance, decreased fuel efficiency, and even stalling of the engine.

Causes of Code P2135

The most common causes of code P2135 are faulty internal components, corroded or open wires, and faulty connectors. These can be caused by wear and tear over time or by improper installation. Other possible causes include an electrical short circuit or an incorrect calibration of the throttle/pedal position sensor.

Signs & Symptoms of Code P2135

Signs and symptoms associated with code P2135 include reduced engine performance, decreased fuel efficiency, engine stalling, jerking motions at low speeds, and a check engine light illuminating on your dashboard. It is important to take your vehicle to a certified repair shop if you notice any of these symptoms as they can indicate more serious issues than just code P2135.

How to Fix Code P2135 in Automobiles?

The best way to fix code P2135 is by replacing any faulty parts such as the throttle/pedal position sensor or corroded wires/connectors. Additionally, it is important to clean any contacts and terminals that may be affected by wear and tear over time. Lastly, it is recommended to reset the system using an OBDII scanner in order to ensure all components are functioning properly.

Tips for Avoidance of Code P2135 in Automobiles

In order to avoid code P2130 in automobiles it is important to regularly maintain your vehicle and inspect electrical components for wear and tear or other damage. Additionally, ensure that all harness connections are secured and that you monitor performance regularly. Finally, try not to overload your vehicle by reducing excessive weight loads or ensuring proper tire pressure when carrying items such as cargo or passengers.

FAQ & Answers

Q: What is Code P2135?
A: Code P2135 is a diagnostic trouble code that indicates a Throttle/Pedal Position Sensor Circuit Malfunction. It is commonly associated with the Check Engine Light, poor acceleration, and stalling.

Q: What Tools are Needed for Diagnosing P2135?
A: An OBDII scanner and a voltage meter are the two main tools needed for diagnosing Code P2135.

Q: What are Common Problems Related to Code P2135 in Automobiles?
A: Common problems related to Code P2135 include faulty sensors and connectors, corroded or open wires, and malfunctioning internal components of the throttle/pedal position sensor.

Q: How can I Fix Code P2135 in Automobiles?
A: In order to fix Code P2135 in automobiles, the faulty parts must be replaced (e.g. throttle/pedal position sensor, corroded or open wires, connectors) and the system must be cleaned and reset with an OBDII scanner.

Q: What Tips can I Follow to Avoid Getting Code P2135 in Automobiles?
A: To avoid getting code P2135 in automobiles, make sure to perform regular maintenance checks (inspect electrical components, check harness connections, monitor performance regularly), reduce excessive weight loads on your vehicle, ensure proper tire pressure and avoid overloading your vehicle.

In conclusion, code P2135 is an OBD-II trouble code that indicates an issue with the throttle position sensor/accelerator pedal position sensor/switch ‘A’ /‘B’ voltage correlation. The most common cause of this code is an issue with the wiring or connector to the TPS, but it can also be caused by a faulty TPS, accelerator pedal sensor, or ECM. It is important to diagnose and repair this issue as soon as possible to prevent further damage to the vehicle.

Author Profile

Carl Frisch
Carl Frisch
With more than 30 years in the bicycle industry, I have a strong background in bicycle retailing, sales, marketing and customer service. I have a passion for cycling and a dedication to excellence. As a manager, I worked diligently to increase my capabilities and responsibilities, managing up to eleven mechanics (at Palo Alto Bicycles) and later as a working partner in my own store.

As the shop owner of Spoke n’ Word Cycles in Socorro, NM, the success of the mission was my responsibility, which I pursued passionately since we opened in 2003 through the spring of 2011. I am adept at managing owned and loan inventory, preparing weekly & annual inventory statements, and managing staff. The role as managing partner also allowed me tremendous freedom. I used this personal freedom to become more deeply involved in my own advancement as a mechanic, to spearhead local trail building, and advocating for cycling both locally and regionally.

As a mechanic, I have several years doing neutral support, experience as a team mechanic, and experience supporting local rides, races, club events. I consistently strive to ensure that bicycles function flawlessly by foreseeing issues and working with the riders, soigners, coaches and other mechanics. Even with decades of experience as a shop mechanic and team mechanic, and continue to pursue greater involvement in this sport as a US Pro Mechanic, and UCI Pro Mechanic.

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