P0190 on Hyundai
Fuel Rail Pressure Sensor Circuit Malfunction
P0190 on Hyundai vehicles indicates fuel rail pressure sensor circuit malfunction. Au7o has documented this code across 1 Hyundai model — most commonly on Tucson. P0190 indicates a malfunction in the fuel rail pressure sensor circuit. This sensor measures the pressure of fuel in the rail (common on direct-injection and high-pressure systems) and reports it to the PCM, which uses it to control the fuel pump and injectors for precise fueling. The code sets when the sensor's signal is out of range, erratic, or electrically faulty. Symptoms can include hard starting, stalling, hesitation, reduced power, or the engine going into a reduced-power fail-safe mode. Typical repair costs on Hyundai range from $450 to $800, depending on the specific model and root cause.
Common Causes of P0190
- •Faulty fuel rail pressure sensor
- •Damaged wiring or connector at the sensor
- •Corroded or loose connector terminals
- •Open, short, or poor ground in the sensor circuit
- •Reference voltage problem from the PCM
- •Actual fuel pressure problems (pump/regulator) confusing the sensor
- •Failed PCM input (rare)
P0190 on Hyundai by Model
Hyundai Tucson(1 issue)
- High Pressure Fuel Pump Failure (GDI)2011-2018
The GDI high-pressure fuel pump on 2.4L Tucson models can fail, causing extended crank times, rough idle, and stalling. The pump cam follower wears prematurely, reducing fuel rail pressure below specification. This is especially common above 80,000 miles.
Looking for P0190 on a different make?
View P0190 across all makes →Frequently Asked Questions
What does P0190 mean on Hyundai?▼
P0190 stands for "Fuel Rail Pressure Sensor Circuit Malfunction." P0190 indicates a malfunction in the fuel rail pressure sensor circuit. This sensor measures the pressure of fuel in the rail (common on direct-injection and high-pressure systems) and reports it to the PCM, which uses it to control the fuel pump and injectors for precise fueling. The code sets when the sensor's signal is out of range, erratic, or electrically faulty. Symptoms can include hard starting, stalling, hesitation, reduced power, or the engine going into a reduced-power fail-safe mode. On Hyundai specifically, this code is documented across 1 model.
What causes P0190 on Hyundai vehicles?▼
Common causes on Hyundai: Faulty fuel rail pressure sensor, Damaged wiring or connector at the sensor, Corroded or loose connector terminals, Open, short, or poor ground in the sensor circuit, Reference voltage problem from the PCM. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0190 on a Hyundai?▼
Repair costs on Hyundai range from $450 to $800, depending on the specific model and root cause.
Which Hyundai models have P0190 documented?▼
Au7o has documented P0190 on 1 Hyundai model: Tucson.