2012 Dodge Challenger Fuel Pump Reset: What It Really Means and How to Fix a Crank-No-Start

The bottom line up front: Your 2012 Dodge Challenger does not have a traditional fuel pump reset button or switch like you would find in a Ford with an inertia switch. However, the fuel pump system on this car can stop working because of a failed relay, a blown fuse, dirty fuel, or a burned-out pump, and resetting the system is usually a matter of clearing the fault, checking the electrical power feed, and letting the pump re-prime. If the car cranks but does not start, the most common causes are a dead pump, a bad relay, or a clogged filter, not a "trip" that needs resetting. Below, you will find a step-by-step, practical guide to diagnosing, resetting, and replacing the fuel pump on your 2012 Challenger, plus the exact part numbers you need.

What the "Reset" Actually Means on a 2012 Challenger

Many drivers search for a fuel pump reset after their Challenger dies suddenly or refuses to start. Some vehicles, especially older Fords and some General Motors trucks, have a physical inertia switch that cuts power to the fuel pump in a collision. The 2012 Dodge Challenger does not use an inertia switch or a driver-accessible reset button.

When people talk about resetting the fuel pump on this car, they usually mean one of three things:

  1. Clearing the fuel pump fuse or relay – Removing the fuse or relay, waiting a few minutes, and reinstalling it to reset the electrical circuit.
  2. Letting the pump prime – Turning the key to the "ON" position for a few seconds, hearing the pump hum, and then starting the engine.
  3. Resetting the battery or the TIPM – Disconnecting the battery for 15 to 30 minutes to clear stored fault codes from the Totally Integrated Power Module (TIPM).

None of these actions require a special tool or a hidden switch.

Where the Fuel Pump Lives and How It Works

On the 2012 Challenger, the fuel pump is an electric unit located inside the fuel tank. It is not under the hood, not under the car, and not accessible without dropping the tank or removing the rear seat access panel. )

The pump draws gasoline through a strainer, pressurizes it, and sends it through the fuel lines to the engine injectors. The system has a check valve that holds residual pressure in the lines when the engine is off, which is what makes restarting quick. When the ignition is turned on, the fuel pump relay in the TIPM activates the pump for about two to three seconds to build pressure before the engine starts.

For the 2012 Challenger, the fuel pump operates in the range of 58 to 62 PSI, and the correct OEM replacement assembly for most 2015–2023 models is the Mopar 68367534AA; for 2012 models, you need to check the exact part based on engine size and build date. The 2012 model year uses a pump that delivers roughly 190 liters per hour at 60 PSI, similar to the later Mopar design.

Signs That Your Fuel Pump Needs Attention, Not a Reset

If you are searching for a reset, you probably already have one or more of these symptoms. Do not ignore them, because a failing pump will not fix itself.

  • Engine sputters at highway speed or under hard acceleration. The pump cannot maintain pressure, so the engine hesitates.
  • Long cranking time before the engine fires. The check valve loses residual pressure, so the pump has to refill the entire line before the injectors see fuel.
  • A whining or humming noise from the rear of the car. This is a worn motor bearing or impeller, and it is often the first warning.
  • Loss of power going uphill or when the car is loaded. The pump cannot deliver enough volume.
  • The car stalls and restarts after a few minutes. This is a classic sign of an overheating or failing pump.
  • The check engine light comes on with codes P0087 (low fuel pressure) or P0230 (fuel pump circuit malfunction). These codes point directly to the fuel delivery system.

How to Properly "Reset" the Fuel Pump Circuit

Here is the correct diagnostic and reset procedure for a 2012 Challenger that cranks but will not start. Do these in order, because most of the time, you will find the problem before you get to the pump itself.

Step 1: Listen for the Prime

Turn the key to the "ON" position without cranking the engine. You should hear a 2-to-3-second whirring sound from the rear of the car. If you hear it, the pump is getting power and running. If you do not hear it, the pump is not receiving power or the motor is dead.

Step 2: Check the Fuel Pump Fuse

Open the under-hood fuse box (the TIPM). Locate the fuel pump fuse, labeled M25 or F70 depending on your build. Remove it and inspect it for a blown element. If it is blown, replace it with a 30-amp fuse and try again. If it blows again immediately, you have a short circuit.

Step 3: Test the Relay

The fuel pump relay is soldered inside the TIPM on many Mopar vehicles of this era. For the 2012 Challenger, the relay is part of the TIPM circuit board, not a plug-in module like on older cars. To test whether the relay is working, you can measure voltage on the fuse while cranking, or swap the entire TIPM if you have a known-good one. If the fuse has no constant 12V while cranking, the relay has failed.

Step 4: Check for Power and Ground at the Pump

If the fuse and relay check out, you need to verify that power actually reaches the pump. Raise the vehicle, locate the pump harness on top of the tank, and use a multimeter to check for 12V at the pump connector while the key is in the "ON" position. A poor ground connection is also a common cause of low voltage, which makes the pump run hot and weak.

Step 5: Reset the TIPM

If the electrical supply is fine but the pump still does not run, disconnect the negative battery cable for at least 15 minutes. This clears transient fault codes in the TIPM that may be interrupting the pump circuit. Reconnect and test again.

Step 6: Replace the Pump

If you have power, ground, and a good relay, but the pump still does not hum, the pump itself is dead. Replacement is the only fix.

The TIPM Problem: A Known Issue That Feels Like a Reset Problem

If you are dealing with a 2012 Challenger that cranks but will not start, especially in cold weather, there is a very good chance the fuel pump relay inside the TIPM has failed. This is a well-documented problem on Chrysler, Dodge, Jeep, and Ram vehicles of this generation.

The relay is soldered directly onto the circuit board inside the TIPM. It is not serviceable without specialized tools. Over time, faulty diodes, cracked solder joints, and worn contacts cause the relay to fail intermittently or completely.

The symptoms are identical to a "tripped" fuel pump reset:

  • The car acts like it is out of gas.
  • It cranks but will not fire.
  • It starts briefly with starter fluid, then dies.
  • The fuel pump is silent when you turn the key.

The dealer solution is to replace the entire TIPM, which can cost over $1,500. Many owners and mechanics now use a bypass method that routes power from an alternate fuse slot directly to the fuel pump fuse slot, bypassing the broken relay entirely.

Temporary Bypass Cable:

You can use two 20-amp fuse taps and a length of wire to bridge power from the M37 (run/start) fuse slot to the M25 (fuel pump) fuse slot. This is a temporary fix and should not be left in place. It can cause the pump to run continuously if installed wrong, and loose connections have been known to cause resistance and heat.

Permanent External Relay:

The more reliable fix is to install an external relay that is triggered by the old fuel pump control signal and carries full battery power directly to the pump. This is a permanent solution and is recommended by many mechanics.

What Actually Kills a Fuel Pump on a Challenger

If you have already replaced the pump once and it failed again, the pump is not the real problem. The root causes are almost always external.

  1. Contaminated fuel. Water, dirt, and rust wear out the pump internals and clog the strainer. This is the number one cause of repeated failures.
  2. Running the tank low. Fuel cools and lubricates the pump. Running below a quarter tank makes the pump overheat and suck up debris from the bottom of the tank.
  3. Electrical issues. Corroded connectors, loose wiring, or a failing relay cause voltage drops that make the pump run hotter and harder.
  4. Clogged fuel filter. A dirty filter forces the pump to push against resistance, which shortens its life.
  5. Bad fuel pressure regulator. A faulty regulator sends incorrect pressure back to the pump, forcing it to work out of its design range.

The habit of keeping the tank above a quarter full can double or triple the life of your fuel pump.

Replacing the Fuel Pump on a 2012 Challenger

If your diagnosis leads you to replace the pump, this is a job you can do in a driveway with basic tools, but it takes patience.

Tools you will need: a socket and wrench set, screwdrivers, safety glasses, a drain pan, fuel line clamps, and a new pump assembly.

The process:

  1. Disconnect the negative battery terminal.
  2. Remove the fuel cap to release tank pressure.
  3. Drain the fuel tank using a siphon pump. This makes the tank lighter and safer to handle.
  4. Access the pump. On the Challenger, you either drop the fuel tank or remove the access panel under the rear seat. Check your service manual.
  5. Disconnect the fuel lines and electrical connectors.
  6. Remove the retaining ring and lift the old assembly out. Note the orientation of the float arm and O-ring.
  7. Install the new assembly, transfer any components from the old unit, and reverse the removal process.

The cost for the pump module itself is typically between $150 and $500, with labor adding $350 to $1,000 or more if a shop does the job. Total replacement cost on a Charger or Challenger usually lands between $500 and $1,500.

A critical tip: When you replace the pump, always replace the fuel filter or the integrated strainer at the same time. Many shops recommend replacing the filter every 30,000 miles or two years.

Why You Should Buy a KEMSO Fuel Pump for Your 2012 Challenger

When it is time to replace the fuel pump on your 2012 Dodge Challenger, do not settle for a cheap economy unit that can fail again in less than a year. KEMSO fuel pumps are high-performance, direct OEM replacement units engineered to meet or exceed your vehicle's original specifications.

Every KEMSO pump is built with precision-machined components and corrosion-resistant materials, and every unit is individually flow-tested before leaving the factory. KEMSO understands that a fuel pump in a Challenger has to deliver consistent pressure and volume under hard acceleration, hot weather, and sustained highway driving, and their pumps are designed to handle that workload.

KEMSO backs every fuel pump with a lifetime warranty. This is not a one-year or even a five-year warranty; it is a true lifetime guarantee that covers defects in materials and workmanship for as long as you own the pump. If it ever fails due to a manufacturing defect, KEMSO replaces it free of charge.

KEMSO offers a convenient vehicle lookup on their site so you can quickly confirm the correct pump for your exact Challenger trim and engine size.

Visit KEMSO Racing today at https://www.kemsoracing.com/ to find the right high-performance, OEM-replacement fuel pump for your 2012 Dodge Challenger, and protect your car with a lifetime warranty.


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