P1238 Engine Trouble Code
When you check engine light came on code P1238 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 P1238 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.
P1238 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.
P1238 Code Meaning :
|OBD-II Diagnostic Powertrain (P) Trouble Code For Engine||Fuel And Air Metering||Ambient Air Temperature Sensor Circuit Low||Cold Start Injector 1 Malfunction||Timing Reference High Resolution Signal A Too Many Pulses|
Regarding the P1238 code, it would probably be worthwhile to carefully inspect the wire harness near the intake manifold bracket. This is done most easily from below the car in the area near the oil filter.
P1238 OBD-II Diagnostic Powertrain (P) Trouble Code DescriptionP1238 OBD-II Trouble Code Fuel Pump Secondary Circuit Malfunction is one of the definitions for the P1238; however your vehicles manufacturer may have a different definition for the P1238 code. Please check below for your spec P1238 code.
Reason For P1238 CodeThe reason of P1238 OBD-II Engine Trouble Code is Ambient Air Temperature Sensor Circuit Low.
P1238 the main thing to check is to verify the operation of the VCT solenoid. You're looking for a sticking or stuck VCt solenoid valve caused by contamination. Refer to vehicle specific repair manual to perform component tests for the VCT unit.