B0378 Trouble Code

View B0378 obd/2 error code description and symptoms. B0378 engine photo

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.

At this point we are assuming that the fuses and relays are good. You will need to locate the PCM/TCM and the power input signal circuit using your vehicle information source. Unplug the connector from the PCM/TCM, place the ignition switch in the ON position, and probe the appropriate circuit with the positive test lead of the DVOM.

B0378 Error Code Repair Process :

If your vehicle failed a B0378 test and the B0378 Check Engine Light is NOT on, chances are you have a problem with the OBDII system, a burned out MIL lamp, or a faulty catalytic converter. The converter is essentially an afterburner that cleans up the exhaust after it exits the engine. The OBDII system uses shift solenoid b stuck on a ownstream oxygen sensor to monitor the efficiency of the converter, and it should detect a drop in converter efficiency if the converter has been contaminated or is failing (ignition misfiring, leaky exhaust valves, and oil burning can all damage the converter). What you want to look shift solenoid b stuck on: Any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression. Use your OBD Express DIY to look at the oxygen sensor outputs, coolant temperature, airflow, calculated engine load, and inlet air temperature.

B0378 is a kind of Body Trouble Code

Auto body problems aren't always easy to spot. Diagnosing auto body problems sometimes requires a little know-how. In this section you'll find articles dedicated to teaching you how to diagnose auto body problems.

Common Causes of B0378

A common cause of code B0378 is the failure of Shift Solenoid B Stuck On, but there are several other possible causes as well, such as ;

Erratic camshaft position due to low oil pressure
Faulty oil control valve (OCV)
Faulty Air Flow Meter
Oil flow restriction in the oil passages or the variable camshaft timing (VCT) valve body

B0378 code for all cars

You can view according B0378 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+B0378 Puma Mini

+B0378 Jaguar Xj6

+B0378 Crossley Regis

+B0378 Lancia Trevi

+B0378 Tesla Y

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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