P91B4 Datsun Pulsar OBD Code

OBD/2 P91B4 error code description and symptoms.

Fuel Rail Pressure Sensor in Range But Low The comprehensive component monitor (CCM) monitors the FRP pressure for acceptable fuel pressure. The test fails when the fuel pressure falls below a calibrated value. Low fuel pressure Damaged FRP sensor Excessive resistance in circuit Low or no fuel A FRP PID value below 551 kpa (80 psi) indicates a failure Low or no fuel A FRP PID value greater than 896 kpa (130 psi) indicates a failure.

One example of this would be when an automatic vehicle in placed in gear. To prevent the added drag from the torque converter and transmission from reducing the idling speed, the PCM will command the idle control valve to allow more air to enter the engine, while at the same time, adjusting the injector pulse width to inject more fuel to suit the increased amount of air. Note that the idle air control valve is closed by the PCM when the throttle plate is opened to prevent excess air from entering the engine.

P91B4 Datsun Pulsar Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine P91B4 light should flash briefly, indicating that the OBD system is ready to scan your vehicle for any malfunctions. After this brief flash, the light should stay off while you drive as long as no problems are detected. If so, you'll be glad to know that your vehicle is equipped with an early warning system that could save you time, money, and fuel in addition to helping protect the .

Difficulty Level (Expert)

Repair Time (35 Min.)

Cost Prediction : $ 30-110

Common Causes of Datsun Pulsar P91B4 OBD2 Code

A common cause of code P91B4 is the failure of , but there are several other possible causes as well, such as ;

• Erratic camshaft position due to low oil pressure
• Failures of clutch motion/travel sensors.
• EVAP system hose leaking
• 1Camshaft Position Sensor circuit poor electrical connection

P91B4 is a kind of Powertrain Trouble Code Powertrain of a modern automobile, comprising engine (with exhaust system), transmission, drive shaft, suspension and the wheels. In a motor vehicle, the term powertrain or powerplant describes the main components that generate power and deliver it to the road surface, water, or air.

P91B4 code for other Datsun cars

You can view according P91B4 DTC for your car model. We selected several models to see obd2 solutions click and view it.

• P91B4 Datsun 100
• P91B4 Datsun 1000
• P91B4 Datsun 120
• P91B4 Datsun 1200
• P91B4 Datsun 14
• P91B4 Datsun 15
• P91B4 Datsun 1600
• P91B4 Datsun 1800
• P91B4 Datsun 2000
• P91B4 Datsun 2300
• P91B4 Datsun 240
• P91B4 Datsun 260
• P91B4 Datsun 280
• P91B4 Datsun Bluebird
• P91B4 Datsun Deluxe
• P91B4 Datsun Laurel
• P91B4 Datsun On-do
• P91B4 Datsun Skyline
• P91B4 Datsun Sports
• P91B4 Datsun Violet
• P91B4 Datsun Z

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