U3860 Honda Nsx Diagnostic Trouble Code

U3860 Honda Nsx code definition:
U3860 is a kind of OBD-II Diagnostic U-Network Diagnostic Trouble Code for Honda Nsx.

U3860 Honda Nsx is a DTC or a diagnostic trouble code. It is a check engine light code which indicates that the catalyst's system efficiency is less than the required threshold. In simple terms, it means that more pollution is added into the air than what was supposed to be because of your car. If the car doesn't start, they will proceed by testing the voltage at the fuel pump connector and see if the fuel pump relay, fuse, and PCM circuitry should be inspected.

Symptoms

Symptoms of a U3860 Honda Nsx diagnostic trouble code may include:
  • Vacuum leak on the engine
  • Reduction in engine performance, especially at low RPM levels
  • Engine surge
  • Poor acceleration
Place of U3860 in engine

Possible Causes :

  • Dirty air cleaner element Damaged DPF
  • A plugged converter will cause of host of driveability problems as well as set this code. A severely plugged converter will result in the inability to increase rpm when under load. Look for a code such as P0421 -- catalytic converter efficiency below threshold if the converter indicating a faulty converter.
  • Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

Common Misdiagnoses

  1. TP Sensor Learn Not Complete Problem
  2. Low Coolant Circuit Problem
  3. Cruise Control System - Vehicle Accel Too High Problem
  4. TFP Valve Position Switch-Drive Without Drive Ratio Problem
  5. Problem

Repair Processes :

Oxygen sensors signal the engine management computer the amount of oxygen present in the exhaust, which is used in determining and controlling the fuel ratio. You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data. Look for damage to the tank indicating impact that may have damaged the fuel pump or sender.

Process Tips

Diagnostic trouble code U3860 Honda Nsx is not difficult to diagnose and repair. Thus, it always pays to have a qualified technician to look after your vehicle should this error code arise.

Diagnosing this code requires the engine to be in good running shape, without unmetered air entering the engine. If other codes that relates to misfiring condition, lean running or air entering the engine is present, then you must first fix those error codes before U3860 Honda Nsx.

Fortunately, U3860 Honda Nsx is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

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