P242E - OBD II Trouble Code

January 31, 2017

Our automotive experts have put together the following information about the P242E diagnostic trouble code. We've provided the common symptoms that occur when this code is set along with the frequent repairs that address the issues related to the P242E code.

OBD II Fault Code

  • OBD II P242E

OBD-II Code Powertrain Control Module (PCM) failure is defined as a Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic

The Exhaust Gas Temperature (EGT) Sensor tells the engine control module (PCM) the temperature of the exhaust gas going into and out of the Selective Catalytic Reduction (SCR). If the PCM detects an implausible signal from the EGT sensor, it will store code P242E.

Common Problems That Trigger the P242E Code

  • Exhaust Gas Temperature (EGT) sensor failure
  • Powertrain Control Module (PCM) failure
  • Wiring issue

About the Author

Brad Kava is an automotive expert at RepairPal, the leading online source of auto repair resources and estimates. With many ASE Master certified mechanics on staff who have decades of experience, RepairPal knows all the fine points of car repair.

No comments yet…

Sign in to comment

Related Questions

See what others have asked about this, or visit the Questions page to ask your own question.
2000 Mitsubishi Eclipse
I installed a used japanese long block and the crank. pos. sensor and its tone/ reflector? ring installed weren't new...