B3021 Peugeot Nautilus OBD Code

OBD/2 B3021 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.

As long as the throttle plate remains closed, the idling speed and quality is controlled by the PCM via the idle control valve, and as can be seen from the above it should be clear that idle control on a gasoline engine is a complex affair. For instance, if the engine is started in sub-zero temperatures, the PCM will command the idling control valve to allow less air to enter the engine to enrich the air/fuel mixture to create a condition which is roughly analogous to how chokes worked on carburetted engines to control idling in cold weather.

B3021 Peugeot Nautilus Error Code Repair Process :

For engine speed input circuit range/performance check engine light is perhaps the most troubling of lights because it could mean so many different things, from you didn't screw the gas cap on tightly enough to look out for pistons flying through the hood and into the stratosphere. The easiest way to find out what this light is telling you is to hook your vehicle up to a scan tool. B3021 error code diagnostic tool looks a little like an oversized calculator and plugs into a communication port inside the car. After you instruct it to perform the scan, it speaks engine speed input circuit range/performance with your car's computers to find out exactly what's prompting the light to turn on.

Common Causes of Peugeot Nautilus B3021 OBD2 Code

A common cause of code B3021 is the failure of Engine Speed Input Circuit Range/Performance, but there are several other possible causes as well, such as ;

Damaged camshaft position (CMP) sensor
1Camshaft Position Sensor circuit poor electrical connection
Faulty variable valve timing (VVT)
Faulty Variable Camshaft Timing (VCT) position solenoid

B3021 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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B3021 Peugeot Nautilus OBD Code

B3021 Peugeot Nautilus Error Code Repair Process :

Common Causes of Peugeot Nautilus B3021 OBD2 Code

B3021 code for other Peugeot cars