P0B81 Mazda 2000 OBD Code

OBD/2 P0B81 error code description and symptoms.

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.

A good starting point in your diagnosis is checking all system fuses and fusible links. This can be done using the DVOM on the voltage setting. You will want to test the fuses with circuits loaded. Some fuses will appear normal until a load is placed on their respective circuit; at which point they will fail. This has been the cause of many 'phantom malfunctions'. Consult your vehicle information source for fuse and fusible link locations. If all fuses are in working order, you may want to check TCM relay operation by swapping identical relays. Usually the horn relay, starter relay, fuel pump relay, air conditioning clutch relay, and controller relays are similar enough in design to swap for diagnostic purposes.

P0B81 Mazda 2000 Error Code Repair Process :

If your vehicle signal indicating park while vss present check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system P0B81 and engine control unit are in charge of monitoring a bunch of different vehicle signal indicating park while vss present, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Mazda 2000 P0B81 OBD2 Code

A common cause of code P0B81 is the failure of Vehicle Signal indicating Park While VSS Present, but there are several other possible causes as well, such as ;

Camshaft Position Sensor harness is open or shorted
Camshaft advance mechanism binding (VCT unit)
Intake Valve Timing Control Solenoid Valve circuit poor electrical connection
EVAP canister or fuel tank leaks

P0B81 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.

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

About Us | Contact | Privacy

P0B81 Mazda 2000 OBD Code

P0B81 Mazda 2000 Error Code Repair Process :

Common Causes of Mazda 2000 P0B81 OBD2 Code

P0B81 code for other Mazda cars