U3481 Subaru R1 OBD Code

OBD/2 U3481 error code description and symptoms.

Engine Coolant Temperature (ECT) Circuit High Input Indicates the sensor signal is greater than Self-Test maximum. The ECT sensor maximum is 4.6 volts or -50 C (-58 F). Note on some vehicles that are not equipped with an ECT sensor, CHT can be used and can set this DTC. Open circuit in harness Sensor signal short to power Damaged PCM Improper harness connection Damaged sensor ECT V PID reading greater than 4.6 volts with key ON and engine OFF or during any engine operating mode indicates a hard fault.

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.

U3481 Subaru R1 Error Code Repair Process :

If your a/c clutch circuit fault 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 U3481 and engine control unit are in charge of monitoring a bunch of different a/c clutch circuit fault, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Subaru R1 U3481 OBD2 Code

A common cause of code U3481 is the failure of A/C Clutch Circuit Fault, but there are several other possible causes as well, such as ;

Engine Control Module (ECM)
Faulty Variable Camshaft Timing (VCT) position solenoid
Intake Valve Timing Control Solenoid Valve circuit poor electrical connection
Variable Camshaft Timing (VCT) position circuit poor electrical connection

U3481 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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U3481 Subaru R1 OBD Code

U3481 Subaru R1 Error Code Repair Process :

Common Causes of Subaru R1 U3481 OBD2 Code

U3481 code for other Subaru cars