Fiat Talento Power Steering Issue

The symptoms you describe – vibrating steering wheel, spongy handling, error code, and increased steering effort – do point towards a potential issue within the steering system. Given that the effort required to steer has increased, it is possible that the power steering has failed or is failing. Considering the error stored in the memory, it may be a sensor malfunction or a faulty connection. Inspecting the cable and plug connections to the power steering components is a good starting point. Power steering systems often rely on electronic sensors to control hydraulic pressure, so a defective connection can certainly cause such issues. Have you checked the voltage supplied?

Thanks for the reply. When you say 'voltage supplied', where exactly should I be checking? Is there a specific connector or sensor I should be focusing on first?

When I mention 'voltage supplied', I'm referring to the electrical power provided to the power steering pump and control module. Begin by identifying the power steering pump, typically located near the engine or on the steering rack itself. Use a multimeter to measure the voltage at the pump's connector. Consult your vehicle's wiring diagram to identify the correct pins for voltage measurement. A wiring diagram provides specifics about where the relevant sensors are located. If the voltage is significantly lower than the specified voltage (usually around 12V), there could be an issue with the wiring, a fuse, or the power steering control module. If you are unsure I'd advise you to take the vehicle to a qualified technician to diagnose the issue more accurately.

Appreciate the detailed explanation. I'll have a look at the voltage, but sounds like it's beyond my capabilities. I took it to a local mechanic, and you were spot on – it was a defective cable connection to the power steering. They cleaned the contacts and secured the plug. Total cost was 95€. Steering is back to normal now.