C0401 Hyundai Lantra OBD Code

OBD/2 C0401 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.

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.

C0401 Hyundai Lantra Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine C0401 light should flash briefly, indicating that the OBD system is ready to scan your vehicle for any malfunctions. After this brief flash, the light should stay off while you drive as long as no problems are detected. If horn switch circuit failure so, you'll be glad to know that your vehicle is equipped with an early warning system that could save you time, money, and fuel in addition to helping protect the horn switch circuit failure.

Common Causes of Hyundai Lantra C0401 OBD2 Code

A common cause of code C0401 is the failure of Horn Switch Circuit Failure, but there are several other possible causes as well, such as ;

Damaged camshaft position (CMP) sensor
Faulty Camshaft Position Sensor
Incorrect fuel pressure
Oil Control Valve (OCV) circuit is open or shorted

C0401 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.

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

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C0401 Hyundai Lantra OBD Code

C0401 Hyundai Lantra Error Code Repair Process :

Common Causes of Hyundai Lantra C0401 OBD2 Code

C0401 code for other Hyundai cars