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P0452

Hello. The diagnostic codes (https://www.yourmechanic.com/services/check-engine-light-is-on-inspection) you are receiving may be a result of both sensors failing, or a power supply issue. The code P1639 stands for an A/C refrigerant pressure sensor voltage shortage. The second code P0452 (https://www.yourmechanic.com/article/p0452-obd-ii-trouble-code-evaporative-emission-control-system-pressure-sensor-low-input-by-logan-utsman) stands for...

Hello. You have 2 separate problems here. The P0191 (https://www.yourmechanic.com/article/p0191-obd-ii-trouble-code-fuel-rail-pressure-sensor-circuit-range-performance-by-jamahl-walker) (fuel rail pressure sensor circuit problem) may just be a symptom - it is reporting suspect fuel pressure on the rail. The fuel pressure on the rail is controlled by...