P0191 on MINI
Fuel Rail Pressure Sensor Circuit Range/Performance
P0191 on MINI vehicles indicates fuel rail pressure sensor circuit range/performance. Au7o has documented this code across 4 MINI models — most commonly on Cooper S, GP, John Cooper Works. This code sets when the fuel rail pressure sensor's signal is out of its expected range or doesn't match what the computer expects for current conditions. On direct-injection and many modern engines, this sensor reports fuel pressure in the rail so the computer can precisely control fueling and the fuel pump. When the reading is implausible — too steady, erratic, or inconsistent with commanded pressure — this code is set, sometimes with hard starting, hesitation, or reduced power. It generally points to the sensor or its wiring, though an actual fuel-pressure problem can also trigger it. Typical repair costs on MINI range from $500 to $2,200, depending on the specific model and root cause.
Common Causes of P0191
- •Faulty fuel rail pressure sensor
- •Corroded, loose, or damaged sensor connector
- •Open, shorted, or high-resistance sensor wiring
- •Actual fuel pressure out of range (weak pump or regulator)
- •Restricted fuel filter or supply line
- •Loss of reference voltage or ground from the ECM/PCM
- •Faulty fuel pressure regulator or control valve
P0191 on MINI by Model
MINI Cooper S(1 issue)
- High-Pressure Fuel Pump (HPFP) Failure2007-2012
The N14 engine's high-pressure fuel pump (same issue as early BMW N54) fails prematurely, causing long cranking, rough running, and stalling. The internal cam follower wears down, reducing fuel pressure to the direct injection system.
MINI GP(1 issue)
- High-Pressure Fuel Pump (HPFP) Failure (N14/N18/B48 Turbo DI)2013-2021
MINI GP models with turbo direct-injection engines have documented HPFP failures that can cause long crank/no-start, limp mode, and reduced power. The pump can lose pressure internally or fail electrically, often showing up under hot restarts or heavy load. Owner reports and NHTSA complaints across R56/R60-era MINIs (including GP2’s N18) frequently describe intermittent stalling and repeated fuel-pressure faults.
MINI John Cooper Works(1 issue)
- High-Pressure Fuel Pump (HPFP) Premature Failure2008-2012
The N14 engine's high-pressure fuel pump (HPFP) is an extremely common failure point, with failures documented as early as 40,000 miles. The HPFP fails to maintain adequate fuel rail pressure, causing hard starting, extended cranking, stalling, and reduced engine power. MINI issued a service bulletin acknowledging the premature failure. If not addressed, low fuel pressure under boost can cause lean combustion conditions that damage pistons and valves.
MINI Paceman(1 issue)
- High-Pressure Fuel Pump (HPFP) Failure2013-2016
The direct-injection engines in the Paceman use a high-pressure fuel pump that can fail without warning. HPFP failure causes immediate stalling or inability to start. The issue is related to internal cam follower wear and is shared with other MINI/BMW turbocharged engines.
Looking for P0191 on a different make?
View P0191 across all makes →Frequently Asked Questions
What does P0191 mean on MINI?▼
P0191 stands for "Fuel Rail Pressure Sensor Circuit Range/Performance." This code sets when the fuel rail pressure sensor's signal is out of its expected range or doesn't match what the computer expects for current conditions. On direct-injection and many modern engines, this sensor reports fuel pressure in the rail so the computer can precisely control fueling and the fuel pump. When the reading is implausible — too steady, erratic, or inconsistent with commanded pressure — this code is set, sometimes with hard starting, hesitation, or reduced power. It generally points to the sensor or its wiring, though an actual fuel-pressure problem can also trigger it. On MINI specifically, this code is documented across 4 models.
What causes P0191 on MINI vehicles?▼
Common causes on MINI: Faulty fuel rail pressure sensor, Corroded, loose, or damaged sensor connector, Open, shorted, or high-resistance sensor wiring, Actual fuel pressure out of range (weak pump or regulator), Restricted fuel filter or supply line. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0191 on a MINI?▼
Repair costs on MINI range from $500 to $2,200, depending on the specific model and root cause.
Which MINI models have P0191 documented?▼
Au7o has documented P0191 on 4 MINI models: Cooper S, GP, John Cooper Works, Paceman.