B1478 Trouble Code

View B1478 obd/2 error code description and symptoms. B1478 engine photo

Output Shaft Speed sensor circuit intermittent failure The output shaft speed sensor signal to the PCM is irregular or interrupted.
Harness connector not properly seated Harness intermittently shorted, or open Harness connector damaged OSS sensor damaged, or not installed properly Verify harness and connector integrity Verify OSS sensor proper installation.

To check for an open circuit, trace along the length of the transmission control circuit, checking for breaks in the wiring. Repair any broken wiring and make sure all connectors are fully seated and locked.Pay close attention to connectors, looking for corrosion, bent or broken pins, or moisture in the connector. Repair any connector issues even if they are not specifically part of the transmission control circuit as they may serve a function in providing power to the transmission control circuit.

B1478 Error Code Repair Process :

If your vehicle failed a B1478 test and the B1478 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 b1478 power window one touch up/down activated simultaneously 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 b1478 power window one touch up/down activated simultaneously: 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.

B1478 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 B1478

A common cause of code B1478 is the failure of B1478 Power Window One Touch Up/Down Activated Simultaneously, but there are several other possible causes as well, such as ;

Camshaft Position Sensor harness is open or shorted
Faulty Air fuel ratio (A/F) Sensor 1 Bank 1
Clogged or faulty fuel injector (s)
Faulty Mass Air Flow (MAF) sensor

B1478 code for all cars

You can view according B1478 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+B1478 Maserati Karif

+B1478 Simca 1300

+B1478 Maserati 350

+B1478 Bugatti Type 50b

+B1478 Spa 25 Hp

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

About Us | Contact | Privacy