P0300 is a generic OBDII code that can occur with the Jeep Grand Cherokee. This code indicates that your vehicle’s engine is misfiring and can be a drivability threat. P0300 is often accompanied by cylinder-specific misfire codes (P030X, where the X indicates the cylinder number that is misfiring). If you have P0300 and a cylinder-specific … Read more
One of the most common trouble codes with the Jeep Grand Cherokee is P0171. It indicates that your Jeep Grand Cherokee is running lean on the bank one side. It’s the most common air/fuel mixture-related code. It’s not the most complicated OBDII trouble code to diagnose. It is also one of the most common codes. … Read more
P0135 is a very common OBDII code that occurs in the Jeep Grand Cherokee. It is caused by a failure in one of the oxygen sensors heated elements, specifically bank 1 sensor 1. It technically stands for: P0135: Heated Oxygen Sensor → Sensor Heater Circuit Malfunction → Bank 1, Sensor 1 The purpose of the … Read more
A somewhat common issue with the Jeep Grand Cherokee is the P0449 code. This code references a number that is given to you when you plug your Grand Cherokee into a OBD2 scanner. P0449 deals with the evaporative emissions control (EVAP) system. It often appears with, or is related other codes, such as P0420, P0446, … Read more
A prevalent issue with the Jeep Grand Cherokee is the P0446 code. This code corresponds to a specific number obtained when connecting your Grand Cherokee to an OBDII scanner. A faulty vent control valve most commonly causes P0446. Definition P0446: EVAP System – Vent Control Circuit – Malfunction Symptoms Usually none Common Causes Bad EVAP … Read more
One of the most common issues that happens with the Jeep Grand Cherokee is the P0442 trouble code. This code appears when connecting the vehicle to an OBDII scanner and pertains to the emissions system. While it’s unlikely to cause a breakdown, it can be bothersome and may result in a failed emissions test for … Read more
This page is meant to help you troubleshoot the Jeep Grand Cherokee P0430 trouble code. It covers the P0430 code’s meaning, symptoms, causes, and possible solutions. P0430 is an emissions-related trouble code and is virtually never a breakdown risk. P0430 is usually caused by a catalytic converter issue or a bad O2 sensor. Table of … Read more
This page is meant to help you troubleshoot the Jeep Grand Cherokee P0420 trouble code. It covers the P0420 code’s meaning, symptoms, causes, and possible solutions. P0420 is the most common OBDII code and is virtually never a breakdown risk. A failing oxygen sensor or bad catalytic converter are the most common causes of P0420. … Read more
P0741 is a very common OBDII trouble code. It’s know to affect the Jeep Grand Cherokee quite often. Here’s what it means: P0741: Torque Converter Clutch Circuit → Performance or Stuck Off The Grand Cherokee uses a clutch in the torque converter to lock the engine and transmission together at highway speed. P0741 can register … Read more