P21A5 Toyota Hilux Viii OBD Code

OBD/2 P21A5 error code description and symptoms.

Catalytic converters must be warm before they can work properly. On a cold start the PCM provides a rich mixture to keep the cold engine running.
All that extra fuel goes into the catalytic converter. But the exhaust isn't very hot, because, ah, the engine is pretty cold. GM has employed several strategies to fire up the catalytic converter quicker and reduce cold start emissions. One way is to use a secondary air pump that pumps outside air directly into the catalytic converter.

Gear changes are accomplished by a command from the TCM to energize the clutch actuator to release the clutch; after which various actuators inside the transmission disengage the current gear, and depending on current operating conditions, engage the next higher or lower gear ratio. All of this happens much faster than a human driver could change gears, and in most applications, gear changes are as smooth and seamless as on any fully automatic transmission.

P21A5 Toyota Hilux Viii Error Code Repair Process :

If your camshaft position sensor b circuit malfunction 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 P21A5 and engine control unit are in charge of monitoring a bunch of different camshaft position sensor b circuit malfunction, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Toyota Hilux Viii P21A5 OBD2 Code

A common cause of code P21A5 is the failure of Camshaft Position Sensor B Circuit Malfunction, but there are several other possible causes as well, such as ;

Dirty Oil
Engine Control Module (ECM)
Faulty Camshaft Position Sensor
Internal electrical failures in actuator motors/solenoids.

P21A5 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

P21A5 Toyota Hilux Viii OBD Code

P21A5 Toyota Hilux Viii Error Code Repair Process :

Common Causes of Toyota Hilux Viii P21A5 OBD2 Code

P21A5 code for other Toyota cars