P00C9

Fuel Pressure Regulator A Solenoid Supply Voltage Control Circuit Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Unstable engine operation
Power Loss
Increased fuel consumption
Difficulty starting the engine

Causes

Open or short circuit in solenoid control circuit
Fuel pressure regulator solenoid malfunction
Problems with the ECU
Poor contact in circuit connectors

How to Fix

Check the continuity and resistance of the solenoid control circuit
Check the functionality of the fuel pressure regulator solenoid
Inspect connectors and contacts for corrosion or damage
If necessary, replace the solenoid or repair the circuit.

Related codes

P0087 P0088 P0190