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P1240 Engine Trouble Code

P1240 Engine

When you check engine light came on code P1240 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However your vehicle's manufacturer may have a different definition for the P1240 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

When your car's 'P1240 Check Engine' light comes on, it's usually accompanied by a sinking feeling in the pit of your stomach. The light could mean a costly problem, like a bad catalytic converter, or it could be something minor, like a loose gas cap. But in many cases, it means at minimum that you'll be visiting the car dealer to locate the malfunction and get the light turned off.

P1240 Code Meaning :

P 1 2 4 0
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine Fuel And Air Metering Ambient Air Temperature Sensor Circuit Low Engine Shutoff Solenoid Malfunction Exhaust Gas Recirculation Sensor B Circuit High

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.

P1240 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P1240 OBD-II Trouble Code Sensor Power Supply Malfunction is one of the definitions for the P1240; however your vehicles manufacturer may have a different definition for the P1240 code. Please check below for your specific mak P1240 code.

Reason For P1240 Code

The reason of P1240 OBD-II Engine Trouble Code is Ambient Air Temperature Sensor Circuit Low.

Parts or components should not be replaced with reference to only a P1240 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.