P2036 EGT Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 2

P2036 EGT Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 2

OBD-II DTC Datasheet

Exhaust Gas Temperature EGT Sensor Circuit Bank 2 Sensor 2 High

What does this mean?

This is a generic transmission code which means it covers all makes / models from 1996 onwards. However, specific troubleshooting steps may differ from vehicle to vehicle.

This diagnostic trouble code (DTC) P2036 relates to the condition of the EGT (exhaust gas temperature) sensor located in the “upstream” pipe before the catalytic converter. Its sole purpose in life is to protect the converter from damage due to excessive heat. This code means that the circuit is in a high voltage condition.

Code P2035 is a similar code that indicates that the circuit is showing “low” voltage. Both relate to the sensor status and the correction is the same for both. This P2036 DTC is for bank #2 (the side of the engine that is missing cylinder #1). DTC P2033 is basically identical but is for bank 1.

The EGT sensor is found on most recent models of gasoline or diesel engines. It is nothing more than a temperature-sensitive resistor that converts the temperature of the exhaust gases into a voltage signal for the computer. It receives a 5V signal from the computer over one wire and the other wire is grounded.

The higher the exhaust temperature, the lower the ground resistance, resulting in higher voltage - and conversely, the lower the temperature, the higher the resistance, resulting in lower voltage. If the engine detects high voltage, the computer will change the engine timing or fuel ratio to maintain the temperature within the acceptable range inside the converter.

Example of an EGT exhaust gas temperature sensor:

In diesel, EGT is used to determine the PDF (Diesel Particulate Filter) regeneration time based on the temperature rise.

If, when removing the catalytic converter, a pipe was installed without a catalytic converter, then, as a rule, the EGT is not provided, or, if it is, it will not work correctly without back pressure. This will install the code.

symptoms

The check engine light will come on and the computer will set a code P2036. No other symptoms will be easy to recognize.

Possible reasons

Reasons for this DTC may include:

• Check for loose or corroded connectors or terminals, which is often the case
• Broken wires or lack of insulation can cause a short circuit directly to ground.
• The sensor may be out of order
• Catback exhaust system without EGT installation.
• It is possible, though unlikely, that the computer is out of order.

P2036 Repair Procedures

• Raise the car and find the sensor. It is located between the exhaust manifold and the converter or, in the case of a diesel engine, in front of the Diesel Particulate Filter (DPF). This DTC applies to block # 2, which is the side of the engine that does not contain cylinder # 1. It differs from oxygen sensors in that it is a two-wire plug. On a turbocharged vehicle, the sensor will be located next to the turbocharged exhaust gas inlet.
• Check the connectors for any abnormalities such as corrosion or loose terminals. Trace the pigtail to the connector and check it.
• Look for signs of missing insulation or exposed wires that may short to ground.
• Disconnect the upper connector and remove the EGT sensor. Check the resistance with an ohmmeter. Check both terminals of the connector. A good EGT will be about 150 Ohms. If the resistance is very low - below 50 Ohms, replace the sensor.
• Use a hair dryer or heat gun and heat the sensor while observing an ohmmeter. The resistance should drop as the sensor heats up and rise as it cools. If not, replace it.
• If everything was good at this point, turn on the key and measure the voltage on the cable from the motor side. The connector should have 5 volts. If not, replace the computer.

Another reason for setting this code is that the catalytic converter has been replaced with a return system. In most states, this is an illegal procedure that, if discovered, is punishable by a large fine. It is recommended to check local and national laws regarding the disposal of this system as it allows uncontrolled emissions to the atmosphere. It might work, but everyone has a responsibility to do their part to keep our atmosphere clean for future generations.

Until this is repaired, the code can be reset by purchasing a 2.2 ohm change resistor from any electronics store. Just dispose of the EGT sensor and connect the resistor to the electrical connector on the motor side. Wrap it with tape and the computer will verify that the EGT is working properly.

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