2022年7月17日 · Wiring Issues: Corroded, damaged, or shorted wiring in the 5-volt reference circuit can disrupt the voltage supply to sensors and components. Faulty Sensor: A defective sensor connected to the 5-volt reference circuit can draw excessive current, causing the …

2013年9月3日 · The code P0641 is your throttle position sensor. You can try to replace the fuel rail pressure sensor. +1^ The is a diagnostic procedure that requires a scan tool (not a code reader) and it's fairly complicated. But it's probably cheaper than throwing sensors at it until, maybe, it's fixed. Update. Service Engine light came back on.

2023年8月21日 · A P0641 code means that your Chevy Silverado’s Powertrain Control Module (PCM) has detected an issue with the 5-volt reference circuit voltage, which may be higher or lower than expected. This circuit feeds into multiple engine sensors such as the Engine Oil Pressure Sensor, the Fuel Rail Pressure Sensor, the A/C refrigerant pressure sensor ...

2020年7月16日 · Shops are reporting a high incidence of a P0641 code on GM vehicles. This code specifically relates to the vehicle’s powertrain control module (PCM) detecting an issue with the 5-volt reference circuit “A.” In this article, we’ll explore what the P0641 code means, its causes, symptoms, and how to diagnose and fix the issue. What is the P0641 Code?

The fault code P0641 in an automobile can be caused by a faulty Engine Control Module (ECM), an open or shorted ECM harness, a poor electrical connection in the ECM circuit, or a shorted sensor on the 5 volt circuit.

2022年7月17日 · The P0641 code indicates an issue with the 5-volt reference circuit, which is critical because it supplies power to various sensors in your car. The other codes you’re seeing are likely related because they involve sensors relying on that 5-volt reference.

2019年5月6日 · Check for damaged components and look for broken, bent, pushed out, or corroded connector pins. The Engine Control Module (ECM) has detected the sensor 5 volt reference circuit voltage is higher or lower than expected. Need more information about the P0641 code? Need more information on how to fix the P0641 code?

2021年7月30日 · DTC P0641 stands for “Sensor Reference Voltage “A” Circuit/Open.” It’s triggered when the PCM detects voltage that doesn’t match manufacturer specifications on the 5-volt reference circuit. Code P0641 is typically caused by malfunctioning sensors, wiring issues, and PCM problems.

2024年5月21日 · P0641 indicates a problem with the sensor reference voltage “A” circuit. Common symptoms include the Check Engine Light, poor engine performance, and difficulty starting. Causes can range from faulty wiring and connectors to a failing PCM.

OBD II fault code P0641 is a generic code that is defined as “Sensor reference voltage “A” -circuit open”, and is set when the PCM (Powertrain Control Module) detects an open circuit in the “A” reference voltage circuit. Most applications use two separate reference voltage circuits to supply a 5V current to engine and other sensors.