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Toyota RAV4 C1521 Engine Trouble Code

Toyota RAV4 C1521 code can be about replacing a broken oxygen sensor can eventually lead to a busted catalytic convertor which can cost upwards of $2,000. Taking your car into a shop will cost you around $200 depending on the car. However, an oxygen sensor is easy to replace on many cars and is usually detailed in the owner's manual. If you know where the sensor is, you only have to unclip the old sensor and replace it with a new one. Regardless of how you approach it, you should get this fixed right away.

Toyota RAV4 C1521 Code Meaning :

C 1 5 2 1
OBD-II Diagnostic Chassis (C) Trouble Code For Engine Fuel And Air Metering Fuel Composition Sensor Circuit Malfunction Turbocharger Boost Sensor A Circuit Low Crankshaft Position Sensor A Circuit Low Input
Toyota RAV4 Engine

When you check Toyota RAV4 car engine light came on code C1521 the reason should be . However manufacturer may have a different definition for the C1521 OBD-II Diagnostic Chassis (C) Trouble Code. So you should chech it on our car models.

C1521 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 C1521 code is occuring now you should check C1521 repair processes.
Now don't ask yourself; What should you do with C1521 code ?
The solution is here :

Toyota RAV4 C1521 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.

C1521 OBD-II Diagnostic Chassis (C) Trouble Code Description

C1521 engine trouble code is about Crankshaft Position Sensor A Circuit Low Input.

Reason For C1521 Code

The reason of C1521 OBD-II Engine Trouble Code is Fuel Composition Sensor Circuit Malfunction.

Parts or components should not be replaced with reference to only a C1521 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.