Hyundai i40 P0301: Misfire Detected – Cylinder 1

P0301 is a common OBDII trouble code that appears in the Hyundai i40. It stands for:     P0301 should be considered a cause for concern, and can be a threat to the drivability your i40. The one nice thing about P0301 is that it is a cylinder specific misfire code. This makes diagnosing the … Read more

Hyundai i40 P0341: CPS – Range/Performance

P0341 is a somewhat common OBDII diagnostic code in the Hyundai i40. It means that there is a Range/Performance problem. In layman terms this means that there is a problem with the signal coming from the Camshaft Position Sensor (CPS).   OBDII P0341 means that there is a problem with the Camshaft Position Sensor (CPS) … Read more

Hyundai i40 P0401: EGR – Insufficient Flow Diagnosis

P0401 is a common OBDII trouble code that’ll pop up in the Hyundai i40. It has to do with the emissions system and stands for: The EGR system on a vehicle is responsible for recirculating exhaust gasses in order to lower the vehicles emissions output. There are three main parts of the i40’s EGR system. … Read more

Hyundai i40 P0171 OBDII Trouble Code Diagnosis

One of the most common trouble codes with the Hyundai i40 is the P0171 code. This code number references a number that is given to you when you plug your car into a OBDII scanner. It’s not the most complicated OBDII trouble code to diagnose. It is also one of the most common.   P0171: … Read more

Hyundai i40 P0300: Engine Misfire Detected

P0300 is one of the most common OBDII codes that occurs in the Hyundai i40. It stands for: P0300 is certainly a cause for concern, and can be a threat to the drivability the Hyundai i40. It will often be accompanied by codes P0301-P0308. These particular codes also indicate that there is a misfire detected, … Read more

Hyundai i40 P0340: CPS – Circuit Malfunction

P0340 is a somewhat common and difficult trouble code to diagnose. The Hyundai i40 is no exception to this rule. That’s because it’s a generic powertrain code. Generic codes tell you that there is a problem, but they don’t really tell you what particular part of the system is throwing the code.     OBDII … Read more

Hyundai i40 P0102: MAF Sensor – Circuit Low

P0102 is a very common trouble code with the Hyundai i40. It means the the Mass Air Flow (MAF) circuit is low, and that it is not performing within its specified operating range. We will cover exactly what that means and potential fixes for it below. It should be considered a high priority to fix, … Read more

Hyundai i40 P0101 Diagnosis: MAF Sensor

With the Hyundai i40, P0101 means the the Mass Air Flow (MAF) sensor has a Range/Performance problem. We will cover exactly what that means and potential fixes for it below. It should be considered a high priority to fix, as the MAF sensor not reading properly can really make an impact on the performance of … Read more

Hyundai i40 P0128: Coolant Thermostat – Below Temp

P0128 is a relatively common OBDII trouble code. It is triggered when your Hyundai i40‘s coolant temperature fails to reach the proper operating temperature. It’s a generic powertrain code, which means that regardless of who manufactured the vehicle, it’ll have the same meaning (1996+).   i40 P0128 Symptoms There aren’t many symptoms with P0128, unless … Read more