C3847 Trouble Code

View C3847 obd/2 error code description and symptoms. C3847 engine photo

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.

At this point we are assuming that the fuses and relays are good. You will need to locate the PCM/TCM and the power input signal circuit using your vehicle information source. Unplug the connector from the PCM/TCM, place the ignition switch in the ON position, and probe the appropriate circuit with the positive test lead of the DVOM.

C3847 Error Code Repair Process :

OBD C3847 code and tailpipe testing are two different approaches to identify vehicles in need of repair. The OBD system looks for broken or malfunctioning emissions control components and damper low side front circuit failure, while tailpipe tests sample a vehicle's exhaust to see if it is above or below certain prescribed limits. Given the robust nature of today's emissions control components, it is entirely possible for an individual component to C3847 malfunction without leading to an immediate increase in emissions at the tailpipe. In such cases, other components (like the catalyst) can temporarily compensate for the part that is broken however, these other components can only do double duty for so long before they, too, begin to malfunction. In addition, OBD also monitors for C3847 and other malfunctions in the fuel system problems that traditional tailpipe tests were not designed to identify. Most state and local areas also include a gas cap pressure test as part of an emission inspection.

C3847 is a kind of Chassis Trouble Code

Diagnosing chassis noises can be one of the most frustrating problems technicians face. Fortunately, manufacturers have engineered noise, vibration and harshness (NVH) diagnostic techniques and equipment to find the source of the noise.

Common Causes of C3847

A common cause of code C3847 is the failure of Damper Low Side Front Circuit Failure, but there are several other possible causes as well, such as ;

Damaged camshaft position (CMP) sensor
Erratic camshaft position due to low oil pressure
Intake air leaks
1Camshaft Position Sensor circuit poor electrical connection

C3847 code for all cars

You can view according C3847 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+C3847 Nissan Stanza

+C3847 Plymouth Gtx

+C3847 Bmw Convertible

+C3847 Osca 1050

+C3847 Ford Royale

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

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