Introduction

The exhaust gas temperature (EGT) sensor in a Dodge Charger plays a critical role in monitoring exhaust heat to protect the catalytic converter, optimize fuel trim, and prevent engine damage. Knowing precisely where this sensor is located on your specific Charger model can save hours of diagnostic time and prevent accidental damage during repairs. While the original article provided basic guidance, this expanded guide will cover the exact placement across different engine options — from the 3.6L Pentastar V6 to the supercharged 6.2L Hellcat — along with detailed identification tips, safety procedures, and testing methods.

EGT sensors are often confused with oxygen sensors, but they serve a distinct purpose: measuring temperature rather than oxygen content. In modern Chargers, these sensors are typically two-wire devices using a negative temperature coefficient (NTC) thermistor, meaning resistance decreases as temperature rises. The powertrain control module (PCM) uses this data to adjust air-fuel mixtures, trigger warning lights, and even reduce engine power if exhaust temperatures become dangerously high.

Understanding the Exhaust Gas Temperature Sensor

Before locating the sensor, it helps to understand its mounting and function. EGT sensors are usually threaded into the exhaust pipe or manifold via a 10 mm or 12 mm boss. They have a small metallic probe (the thermocouple tip) and a wiring harness connector with two pins. The sensor is designed to withstand temperatures from −40 °F to over 1600 °F.

In Dodge Chargers, the EGT sensor is part of the emissions control system. It monitors the exhaust gas temperature entering and exiting the catalytic converter. If the converter overheats (which can happen due to a rich mixture or misfire), the sensor signals the PCM to adjust timing and fuel delivery. Some Charger models have two EGT sensors: one upstream (before the converter) and one downstream (after the converter). Others have a single sensor located near the exhaust manifold outlet.

Dodge Charger EGT Sensor Locations by Engine

The location varies significantly depending on the engine type and model year. Below are the most common configurations.

V6 3.6L Pentastar (2011–present)

On the 3.6L V6, the EGT sensor is typically located in the left (driver's side) exhaust manifold, near the flange where the manifold meets the downpipe. It is threaded into the manifold itself, angled downward. On some later models (2015+), there is a second sensor located on the right (passenger) side, downstream of the catalytic converter, near the flex pipe. To access it, you will need to remove the under-engine splash shield. The sensor connector often has a gray or black plastic tab.

Visual cue: Look for a small cylindrical probe with two wires (usually black and white) protruding from the manifold or pipe. The wire routing follows the engine harness toward the back of the engine bay on the driver's side.

V8 5.7L HEMI (2006–present)

For the 5.7L HEMI, the primary EGT sensor is located on the left exhaust manifold, just after the #7 cylinder outlet. It is mounted on the manifold's upper surface, close to the heat shield. A second sensor is sometimes present in the right exhaust pipe, just after the catalytic converter. On 2011–2014 models, the upstream sensor is easy to see from above the engine; on later models, it may be partially hidden by the intake manifold. You may need to remove the air filter box and the engine cover for better access.

Note: The 5.7L HEMI also uses the EGT sensor to protect the variable valve timing (VVT) components during high-load conditions. A faulty sensor can trigger a P0546 code (EGT sensor circuit high input) or P0036-related codes.

V8 6.4L/392 HEMI (2015–present, Charger Scat Pack)

On the 6.4L naturally aspirated HEMI, the EGT sensor is located in the left exhaust manifold, near the collector. This sensor is often accessed from underneath the vehicle near the front of the engine. There is also a downstream sensor mounted in the exhaust pipe just behind the catalytic converter on the driver's side. The downstream sensor is visible once you remove the heat shields.

The 6.4L engine uses a special high-temperature sensor; its part number is different from the 5.7L sensor. Always verify the correct replacement sensor using your VIN.

Supercharged 6.2L Hellcat (2015–present)

The Hellcat engine has two EGT sensors per cylinder bank (total of four) for precise temperature monitoring to prevent detonation. They are located:

  • Bank 1 (left): One sensor in the left exhaust manifold and one in the left downpipe before the catalyst.
  • Bank 2 (right): One sensor in the right exhaust manifold and one in the right downpipe.

These sensors are smaller than standard EGT sensors and have a unique connector. Access requires removing the underbody panels and sometimes the front sway bar to reach the downpipe sensors. The manifold sensors can be reached from above after removing the engine cover and heat shield.

Step-by-Step Guide to Locate and Access the Sensor

Follow these steps to find the EGT sensor on your Dodge Charger safely and efficiently.

Tools and Preparation

  • Socket set with 10 mm and 12 mm sockets (for sensor removal later)
  • Ratchet with extensions
  • Jack and jack stands or vehicle lift
  • Flashlight or inspection light
  • Safety glasses and gloves
  • Penetrating oil (if sensor is seized)

Safety First

Always allow the exhaust system to cool completely before working near it. The charging system can reach temperatures of 600 °F or more. Park the vehicle on a level surface, engage the parking brake, and chock the wheels. If using a jack, support the vehicle with stands; never rely on the jack alone.

Step 1: Raise the Vehicle

If you are searching for an underbody sensor (downstream), raise the vehicle high enough to crawl underneath comfortably. Secure it with jack stands. If you suspect an upstream manifold sensor, you may be able to reach it from above without raising the vehicle.

Step 2: Locate the Exhaust System Components

Identify the exhaust manifold or the catalytic converter pipe. On a cold engine, shine a flashlight and look for a sensor with a two-wire pigtail. On many Chargers, the sensor connector is a weatherpack-style plug that clicks into place. The sensor body itself will be metallic and about 1 inch long.

Step 3: Trace the Wiring

Follow the wires from the sensor connector back toward the engine harness. The wires will often be taped or loomed into the main harness. This can help confirm whether you are looking at the correct sensor. On V8 models, the wire routing for the left manifold sensor runs behind the engine to the PCM connector on the passenger side.

Step 4: Check for Multiple Sensors

Your Charger may have more than one EGT sensor. Inspect both the driver and passenger sides of the exhaust system. Downstream sensors are usually located on the pipe right after the catalyst, often within 6 inches of the converter outlet. Mark each sensor location with tape for clarity.

Step 5: Visual Identification

Use a phone camera to photograph hard-to-see areas. The sensor will look different from an oxygen sensor: it is smaller, has only two wires (vs. four or five for an O₂ sensor), and the tip is smooth, not threaded like a spark plug. Some aftermarket sensors have a hexagonal base for wrench removal.

Common Signs of a Faulty EGT Sensor

Knowing the location helps with diagnosis. Look for these symptoms of a failing EGT sensor:

  • Check Engine Light with codes such as P0544, P0546, P0547, P0549, P0036, P0038, or P0050.
  • Reduced engine power or limp mode, especially under load.
  • Poor fuel economy due to incorrect air-fuel ratios.
  • Excessive exhaust heat or catalytic converter glowing red (visible at night).
  • Black smoke from tailpipe (rich condition caused by faulty sensor).

If you experience any of these, use a scan tool to read the live data from the EGT sensor. The temperature reading should increase smoothly as the engine warms up. A sensor stuck at a low temperature or reading extreme values is likely defective.

Testing and Replacing the EGT Sensor

Once you have located the sensor, testing it before replacement can save unnecessary parts purchases.

Electrical Testing

Disconnect the sensor and measure resistance across its two terminals. At room temperature (~70 °F), a functioning NTC sensor should read between 100k and 200k ohms. As temperature rises, resistance drops. Use a heat gun on the tip while monitoring resistance — it should decrease steadily. If resistance stays constant or is open, the sensor is faulty.

Replacement Procedure

  1. Disconnect the battery negative terminal.
  2. Unplug the sensor connector.
  3. Apply penetrating oil to the sensor threads and wait 5 minutes.
  4. Remove the sensor using a 10 mm or 12 mm socket (or a special EGT sensor socket).
  5. Install the new sensor with anti-seize compound on the threads (do not use Teflon tape).
  6. Tighten to 20 ft-lb (spec varies; check service manual).
  7. Reconnect the harness and battery.
  8. Clear codes and test drive.

Additional Tips and Resources

For further assistance, consult the following resources:

  • Factory Service Manual: Obtain a PDF from Mopar Service Manuals for exact torque specs and wire diagrams.
  • Online Parts Catalog: Use RockAuto's EGT sensor diagrams to compare part shapes and locations for your year.
  • Community Forums: The Charger Forumz community has many threads with photos of specific sensor placements.
  • Professional Diagnostics: If the sensor is still hard to find, a local shop with a smoke machine can pinpoint exhaust leaks that may be related.

Also keep in mind that on some Charger models, the EGT sensor is integrated into the catalytic converter assembly and cannot be replaced separately. Always check the parts catalog before purchasing.

Conclusion

Locating the exhaust gas temperature sensor on a Dodge Charger requires understanding your engine configuration and taking a systematic approach. The sensor is most often found on the left exhaust manifold or after the catalytic converter, but positions vary widely between the 3.6L V6, 5.7L HEMI, 6.4L 392, and Hellcat engines. By using the detailed descriptions and steps provided here, you can quickly identify the sensor, test it, and replace it if necessary. Always prioritize safety, let the exhaust cool completely, and consult the vehicle’s service manual or a professional mechanic if you encounter difficulties. Accurate identification of the EGT sensor leads to faster repairs, better fuel economy, and a longer life for your Charger’s emissions system.