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P1621 Engine Trouble Code

Meaning of P1621 engine trouble code is : Theoretically you can drive for a few weeks or even months with a broken MAF sensor. You will notice a decrease in gas mileage and over time the car will eventually start stalling a lot. At a shop, the replacement cost is between $200-$300 depending on the car, but that's usually the cost of parts because the labor is relatively simple.

P1621 Possible Solution:

P1621 Engine

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.

P1621 Code Meaning :

P 1 6 2 1
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine Fuel And Air Metering Fuel Temperature Sensor B Circuit Range/Performance Turbocharger Boost Sensor A Circuit Low Crankshaft Position Sensor A Circuit Low Input

The poor running symptoms are consistent with a MAP sensor malfunction. In addition, in some cases, a bad MAP sensor will not throw a code. Again, the ELD code likely represents a separate wiring issue.

P1621 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P1621 engine trouble code is about Crankshaft Position Sensor A Circuit Low Input.

Reason For P1621 Code

The reason of P1621 OBD-II Engine Trouble Code is Fuel Temperature Sensor B Circuit Range/Performance.

P1621 DTCs may also be triggered by faults earlier down the line. For example, a dirty MAF sensor might be causing the car to overcompensate in its fuel-trim adjustments. As a result, oxygen sensors are likely to report fuel mixture problems.