What is the P0654 fault code What is the definition of Engine RPM Output circuit Malfunction? How can I fix the P0654 fault code What are the causes and symptoms for the P0654 fault code
What is the P0654 fault code? What does it all mean?
A code P0654 will be triggered if the powertrain control module (PCM) or one of its related control modules detects a voltage signal on the engine RPM output circuit that does not match the manufacturer-specified range.
The engine RPM output circuit sends a voltage signal from the instrument panel to the control modules. This signals the engine speed (the engine’s speed per minute). The PCM receives data about the engine’s speed from the crankshaft and camshaft sensors. This data is used to calculate and monitor engine controlability. If the PCM detects an issue in the monitoring of engine speed output circuit, fault code P0654 will be set.
P0654 fault codes can be found on vehicles made by Daewoo and Citroen as well as Subaru, Mercedes-Benz and Mercedes-Benz models.
What is the P0654 Fault Code and Why Does It Happen?
Below are some reasons to set fault code P0654:
- Broken or damaged wires, short circuit issues and other problems with the driver instrument cluster
- Panel for defective driver instrument panels
- – Remove loose or corroded connectors
- – Open and short in wiring between PCM and instrument cluster, or other control module
- – Defective engine rev counter
- – Defective crankshaft position sensor
- – Defective camshaft position sensor
- – The PCM is damaged or must be reprogrammed. This happens very rarely
What are the symptoms of P0654 Malfunction Code?
You may experience the following symptoms if your vehicle has the code P0654:
- – Illumination at the check engine lights
- – The engine could not start or run very well.
- – A faulty or inoperative tachometer
- – Faulty or delayed issues that are difficult to shift
- – Concerns regarding the anti-lock brake system (ABS).
- – Problems with the Traction Control System (TCS).
- – There are many engine drivability issues
- – Set of fault codes for ABS and TCS systems
How to Fix the P0654 Fault Code
Before you diagnose code P0654, make sure to resolve any related vehicle speed sensor (VSS), engine speed access codes, or camshaft sensor fault codes.
There are several repairs that can resolve the P0654 fault code.
- Repair of damaged, corroded or melted cables that cause short circuits
- – Clean or replace loose or corroded connectors
- – Replacing the defective driver’s instrument cluster
- – Replacing a defective engine speedometer
- – Replace the crankshaft position sensor
- – Replacing the defective camshaft position sensors
- – Reprogramming or replacement of a faulty PCM
Most manufacturers recommend that both the crankshaft and camshaft sensors be replaced if the fault is due to the crankshaft sensor. This is the best way to ensure that both sensors are installed simultaneously.
How serious is the P0654 Fault code?
P0654 codes indicate a serious problem and need to be fixed immediately. This code indicates that the engine speed cannot accurately be monitored. This could lead to more problems or dangerous driving conditions. P0654 should not be considered serious because it could cause transmission shifting problems, anti-lock brake system (ABS), and electronic traction control (TCS) problems.
