U042E Nissan Az-1 OBD Code

OBD/2 U042E error code description and symptoms.

HO2S Sensor Circuit Malfunction (HO2S-11) During testing the HO2S Heaters are checked for opens/shorts and excessive current draw.
The test fails when current draw exceeds a calibrated limit and/or an open or short is detected. Short to VPWR in harness or HO2S. Water in harness connector. Open VPWR circuit. Open GND circuit. Low battery voltage. Corrosion or poor mating terminals and wiring Damaged HO2S heater. Damaged PCM.

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.

U042E Nissan Az-1 Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine U042E 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 crankshaft position sensor b circuit malfunction 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 crankshaft position sensor b circuit malfunction.

Common Causes of Nissan Az-1 U042E OBD2 Code

A common cause of code U042E is the failure of Crankshaft Position Sensor B Circuit Malfunction, but there are several other possible causes as well, such as ;

Exhaust tube
Engine Control Module (ECM)
Foreign matter caught in fuel filler cap
Damaged ECM

U042E is a kind of Network Trouble Code

U-code indicates that engine communication errors and shows lost communication with engine parts.U-Codes are fairly straight forward, given all of the articles and technical publications that have been written regarding these problematic codes. In most cases, it just comes down to identifying the module that isn't communicating with the other modules on the CAN bus line for whatever reason.

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

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U042E Nissan Az-1 OBD Code

U042E Nissan Az-1 Error Code Repair Process :

Common Causes of Nissan Az-1 U042E OBD2 Code

U042E code for other Nissan cars