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Mitsubishi Nessie U1603 Engine Trouble Code

Mitsubishi Nessie U1603 if your catalytic convertor fails completely, you eventually won't be able to keep the car running. Your gas mileage will also be terrible, so you should try and fix it as soon as you can. Unfortunately, the average replacement cost is around $2,000 and you can't do it yourself unless you're an experienced mechanic.

Mitsubishi Nessie U1603 Code Meaning :

U 1 6 0 3
OBD-II Diagnostic Network (U) Trouble Code For Engine Fuel And Air Metering Fuel Temperature Sensor B Circuit Range/Performance Cold Start Injector 1 Malfunction Exhaust Gas Recirculation Sensor B Circuit High
Mitsubishi Nessie Engine

When you check Mitsubishi Nessie car engine light came on code U1603 the reason should be . However manufacturer may have a different definition for the U1603 OBD-II Diagnostic Network (U) Trouble Code. So you should chech it on our car models.

U1603 Fault Symptoms :

  1. Check engine light comes on
  2. Engine stalling or misfiring
  3. Engine performance issues
  4. Car not starting
If one of these reasons for U1603 code is occuring now you should check U1603 repair processes.
Now don't ask yourself; What should you do with U1603 code ?
The solution is here :

Mitsubishi Nessie U1603 Possible Solution :

Disconnected, dirty or fouled spark plugs are common causes for engines that won't start. Spark plugs typically need to be replaced every season or 25 hours of use. You should also check that the spark plug gap is set properly. If your spark plugs look good, problems with your ignition system can also preventing a spark. These can range from a faulty spark plug lead, shorted kill switch or flywheel key damage.

U1603 OBD-II Diagnostic Network (U) Trouble Code Description

U1603 engine trouble code is about Exhaust Gas Recirculation Sensor B Circuit High.

Reason For U1603 Code

The reason of U1603 OBD-II Engine Trouble Code is Fuel Temperature Sensor B Circuit Range/Performance.

Parts or components should not be replaced with reference to only a U1603 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.