P0190 on BMW
Fuel Rail Pressure Sensor Circuit Malfunction
P0190 on BMW vehicles indicates fuel rail pressure sensor circuit malfunction. Au7o has documented this code across 3 BMW models — most commonly on 3 Series, 5 Series, M340i. 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 BMW range from $500 to $1,500, 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 BMW by Model
BMW 3 Series(1 issue)
- High Pressure Fuel Pump (HPFP) Failure2007-2010
The N54 twin-turbo engine's high pressure fuel pump can fail, causing long cranking, rough idle, and power loss. BMW extended warranty coverage and released updated pump designs.
BMW 5 Series(1 issue)
- N54 High Pressure Fuel Pump (HPFP) Failure (Safety Critical)2008-2012
The N54 twin-turbo engine's high pressure fuel pump fails prematurely, causing sudden engine stalling, long cranking, and dangerous power loss while driving. BMW used defective HPFP designs with faulty internal roller tappets that wear out by 50,000-80,000 miles. Pump failure leaves car stranded and creates safety hazard when engine dies on highway. BMW extended warranty coverage to 10 years/120,000 miles after NHTSA complaints exceeded 987 reports. This is THE most common N54 failure. Updated revision pumps (part numbers ending in higher letters like "F" or "G") are more reliable. Affects E60 535i (2008-2010) and F10 535i (2011-2012 early). Bimmerpost ranks HPFP as #1 N54 problem - failure rate near 60% on original pumps.
BMW M340i(1 issue)
- High-Pressure Fuel Pump (HPFP) Failure2020-2024
The B58 engine's high-pressure fuel pump can fail, though at lower rates than the older N54 engine. When the HPFP fails, fuel pressure drops below the minimum required for proper direct injection, causing long cranking, rough idle, misfires, and in severe cases, the engine stalling and entering limp mode. Failures are more common in cold weather when fuel demands are higher, and can be exacerbated by ethanol-blended fuels.
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View P0190 across all makes →Frequently Asked Questions
What does P0190 mean on BMW?▼
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 BMW specifically, this code is documented across 3 models.
What causes P0190 on BMW vehicles?▼
Common causes on BMW: 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 BMW?▼
Repair costs on BMW range from $500 to $1,500, depending on the specific model and root cause.
Which BMW models have P0190 documented?▼
Au7o has documented P0190 on 3 BMW models: 3 Series, 5 Series, M340i.