B3781 Opel Zafira C OBD Code

OBD/2 B3781 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.

Circuit High Input codes like B3781 are mostly caused by defective alternators that develop excessive voltages, although there may be other causes as well, such as short circuits that 'leak' current into a particular system from other, unrelated systems that work on higher voltages. Note that in the case of short circuits that leak power into a control circuit, there is likely to be other, seemingly unrelated trouble codes present along with the code(s) being investigated. Diagnosing a 'high input' code will always involve a thorough testing of the charging system as a first step, followed by measures to isolate the system from all other possible sources of power during resistance, continuity, and reference voltage tests.

B3781 Opel Zafira C Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine B3781 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 wiper rear motor run relay circuit failure 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 wiper rear motor run relay circuit failure.

Common Causes of Opel Zafira C B3781 OBD2 Code

A common cause of code B3781 is the failure of Wiper Rear Motor Run Relay Circuit Failure, but there are several other possible causes as well, such as ;

Erratic camshaft position due to low oil pressure
Erratic camshaft position due to low oil pressure
Faulty Crankshaft Position Sensor (POS)
Internal electrical failures in actuator motors/solenoids.

B3781 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.

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

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B3781 Opel Zafira C OBD Code

B3781 Opel Zafira C Error Code Repair Process :

Common Causes of Opel Zafira C B3781 OBD2 Code

B3781 code for other Opel cars