P0B21 Seat Altea OBD Code

OBD/2 P0B21 error code description and symptoms.

Mass Air Flow (MAF) Sensor Intermittent The MAF sensor circuit is monitored by the PCM for sudden voltage (or air flow) input change through the comprehensive component monitor (CCM). If during the last 40 warm-up cycles in key ON engine running the PCM detects a voltage (or air flow) change beyond the minimum or maximum calibrated limit, a continuous memory diagnostic trouble code (DTC) is stored.

In most cases, the TCM is integrated into a single housing with the PCM. Nevertheless, the section of the module which controls (automatic) transmission function may be powered up separately. In any case, the TCM is typically powered using switched (only present with the ignition switch in the ON, start, or run position) voltage. This circuit is normally equipped with a fuse, fusible link, and/or a relay. Frequently, the PCM and TCM are powered using the same relay albeit by separate circuits. Access to a reliable vehicle information source will yield necessary details of the TCM power circuit for the specific vehicle in question.

P0B21 Seat Altea Error Code Repair Process :

If your passenger side satellite communication circuit short to ground 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 P0B21 and engine control unit are in charge of monitoring a bunch of different passenger side satellite communication circuit short to ground, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Seat Altea P0B21 OBD2 Code

A common cause of code P0B21 is the failure of Passenger Side Satellite Communication Circuit Short to Ground, but there are several other possible causes as well, such as ;

Damaged camshaft position (CMP) sensor
Faulty Air fuel ratio (A/F) Sensor 1 Bank 1
Camshaft Position Sensor harness is open or shorted
Variable Valve Timing (VVT) circuit is open or shorted

P0B21 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.

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P0B21 Seat Altea OBD Code

P0B21 Seat Altea Error Code Repair Process :

Common Causes of Seat Altea P0B21 OBD2 Code

P0B21 code for other Seat cars