What causes the voltage difference between throttle pedal signal 1 and 2?

[LePeyton]

Throttle pedal signal 1 and 2 voltage inconsistency may be caused by electronic throttle sensor failure. The electronic throttle pedal contains two ICs, serving as primary/secondary pedal sensors. The factory-provided reference voltage values can be used as benchmarks - the primary IC should measure approximately 800mV when idle and around 4900mV at full depression. Significant deviation from these reference values (either too high or too low) indicates potential electronic throttle pedal malfunction. Electronic throttle working principle: The electronic throttle transmits pedal position and movement signals through position sensors. These signals are received and interpreted by the ECU, which then issues control commands to adjust the throttle valve opening angle accordingly. Symptoms of electronic throttle pedal failure: Damaged electronic throttle pedals will trigger warning lights on the dashboard, cause pedal stiffness and abnormal noises during operation, and may fail to return to position after depression. Additionally, faulty throttle pedal sensors prevent the ECU from detecting pedal input, leading to unstable idling, throttle sticking, unresponsive acceleration, and ultimately rendering the vehicle inoperable.

[AllieAnn]

I encountered this issue last month while driving - inconsistent throttle pedal signal voltage, which was really annoying. At the time, I always felt the car responded half a beat slower when pressing the accelerator. Later, after checking, I realized it might be due to a problem with the sensor on the pedal. This component tells the computer how much you want to accelerate, but now signals 1 and 2 don't match up. The most common cause is either one of the sensors failing or a loose connection. Additionally, aging wiring or circuit board malfunctions can also cause this misalignment. Having unresponsive throttle response while driving can be very dangerous - what if you lose control? So I immediately went to the repair shop for inspection. They replaced the sensor, and the problem was solved. Everyone should pay attention to these small details - regularly monitoring your car's abnormalities and scheduled maintenance can prevent many troubles.

[ORhett]

As someone who frequently tinkers with cars, I believe that inconsistent throttle pedal signal voltage is mostly caused by sensor failure or wiring issues. Modern cars use electronic throttle systems, where dual signals are implemented as a fail-safe measure. However, voltage mismatch suggests internal sensor wear, poor contact at wiring connectors, or internal short circuits in the ECU controller. Sometimes, after a car experiences flooding or collision, moisture damage to wiring can also cause this. To solve the problem, first use a diagnostic tool to read error codes, then check if wiring connections are secure, and try replacing the sensor with a new one. I recommend against disassembling things yourself—making a mistake could be even more dangerous. Remember to conduct an annual electrical system inspection to prolong component lifespan.

[WalkerLee]

Hi, this topic is so interesting! I've researched electronic throttle systems in cars, which use dual signals to ensure precision and safety. Voltage discrepancies usually indicate a fault in one of the sensors, such as signal deviation caused by dust accumulation or component aging. It could also be due to wiring damage, like short circuits from rodent-chewed wires. The redundancy design is meant to prevent single-point failures, but once out of sync, the computer will detect a fault and may reduce speed for protection. I've encountered similar situations while working on my own car—opening it up revealed severe wear on the pedal position sensor. I recommend installing dust covers and regularly cleaning the engine bay. Exploring these details really makes driving more enjoyable!

[ArcherMarie]

I want to remind everyone that inconsistent throttle pedal signal voltage is no trivial matter—it poses significant potential risks. If the signal goes haywire, it could cause abnormal acceleration, potentially leading to rear-end collisions or worse on highways. Causes include internal sensor failure, corroded or broken wiring, or ECU module damage. For instance, a friend of mine experienced voltage instability after driving in the rain, which caused moisture in the wiring. If detected, pull over immediately and seek help—do not force the vehicle to operate. Focus inspections on sensor and wiring reliability. For prevention, keep the interior dry and avoid post-modification wiring chaos. Safety comes first; spending on professional diagnostics is worth it.