What is P0637 fault code and what does it mean? What is the description for Servo Hydraulic Steering Control Circuit High Voltage Error? How can you fix P0637 fault code What are the causes and symptoms for the P0637 fault code
What is the P0637 Fault code? What does it all mean?
OBD-II fault codes 050636, P0636, or P0637 are all associated with the power steering controller circuit. If the powertrain control module (PCM), or another related module, detects that the voltage signal coming from the power steering circuit is too high, a code P0637 will be generated.
The power steering control circuit’s purpose is to supply the correct voltage to all the steering components. The PCM monitors voltage signals received from the power steering control circuit, sensors, or switches. These components allow for the correct fluid pressure to be adjusted within your power steering system. This is required to protect power steering components.
To help the steering adapt to different driving conditions and to facilitate steering, the power steering control circuit is connected with the PCM, transmission controller module, cruise control module and anti-lock brake control modules. It continuously sends data. If one of these modules senses an abnormally high voltage signal, the malfunction code P0637 will be set.
The P0637 fault code can affect vehicles of all makes and models, including but not limited to: Renault, Jeep Subaru, Ford, Saturn. Chrysler, Dodge. Mini. Mercedes-Benz.
What causes the P0637 Fault code?
Below are some reasons to set fault code P0637:
- – Short-circuited cables and connectors that have been damaged, melted, or corroded
- – Damaged cables or components on the controller area bus (CAN)
- – Defective power steering tension switch
- – Defective power steering switch
- – Defective power steering controller module
- – A defective power steering motor
- Leakage of power steering fluids could cause an insufficient hydraulic level
- – Blown fuse
- – Hoses that are clogged or bent
- – Defective PCM
What are the symptoms of P0637 Malfunction Code?
These symptoms may be present in vehicles with code P0637.
- – Illumination for check engine light
- – Steering wheels stiffening and reduced assistance
- – Unusual sensations at the wheel of a car
- – When you turn the steering wheel, it makes a clicking sound
- – Other related fault codes
How to Fix the P0637 Fault Code
An error in the communication between control modules can result in a P0637 code. Other trouble codes may be added unnecessarily. Before replacing any parts, it is important to focus on fault codes that are directly related to the Controller Area Network.
There are several repairs that can resolve the P0637 fault code.
- – Repair and replacement of any damaged, disconnected or corroded connectors, components, or cables related to steering system, as necessary
- Replacing a bad power steering pressure switch
- – Replacing a damaged power steering position switch
- – Replacing blownfuses
- Repairing power steering leaks, and topping up hydraulics that are missing
- – Replacing the defective power steering control module
- – Replacing the damaged power steering motor
- – Replacing bent, damaged or clogged Hoses
- – Replacing CAN wiring harness
- – Replacing the faulty PCM
How Serious Is the P0637 Fault Code
This code must be addressed or your driving safety could be compromised. Even if the vehicle is still driveable, poor steering and handling can pose a danger to you and others. It can cause damage to other parts of the hydraulic system if the code is not addressed. Steering issues require immediate attention and must be dealt with as soon as possible.
