P0202 on 2007-2014 Dodge Avenger 2.4L: Injector Circuit Malfunction Causes and Fixes

What's Unique About the 2007-2014 Dodge Avenger

For the 2.4L World Engine in the 2007-2014 Avenger, the P0202 code is a straightforward fault. Unlike the V6 models where injectors are buried under the intake manifold, all four injectors on the 2.4L are easily accessible at the front of the engine, making diagnosis and replacement much simpler for a DIYer. The cylinders are numbered 1-2-3-4 from left to right (passenger side to driver side) when viewing the engine from the front of the car. The most common point of failure is the injector itself, followed by wiring issues near the connector.

Symptoms You May Notice

• Check Engine Light is on (may be flashing if a severe misfire is detected)
• Rough or shaking idle
• Engine hesitation or stuttering during acceleration
• Noticeable loss of engine power
• Poor fuel economy
• Strong smell of raw gasoline near the engine

Most Likely Causes

1. Faulty Cylinder 2 Fuel Injector 🔴 High Probability → Shop Fuel Injector Fuel injectors are a common wear-and-tear item on the 2.4L World Engine. The internal coil winding can fail, creating an open circuit that triggers the code. This is the most frequent failure for P0202 on this platform.
   How to confirm: Swap the fuel injector from cylinder 2 with another cylinder (e.g., cylinder 1 or 3). Clear the codes and run the engine. If the code changes to P0201 or P0203, the injector is confirmed bad. Alternatively, disconnect the injector and measure its resistance with a multimeter; a reading between 11 and 18 ohms is good. A reading of 'OL' (Open Line) or infinite resistance means it has failed internally.
   Typical fix: Replace the faulty fuel injector. 🎬 See this step-by-step Pentastar 3.6L fuel injector replacement guide It is often recommended to replace all four injectors as a set on higher mileage vehicles to ensure balanced performance and prevent future failures, though it is not required.
   Est. part cost: $40 - $150
2. Wiring Harness or Connector Issue 🟡 Medium Probability The wiring harness and connectors in the engine bay are exposed to constant heat and vibration. The plastic locking tabs on the injector connectors frequently break, leading to a poor connection. On some 2.4L models, the harness is also known to chafe on a cylinder head bolt stud, causing a short or open.
   How to confirm: Visually inspect the wiring going to the cylinder 2 injector for any signs of damage, chafing, or melting. Unplug the connector and check for corrosion or bent/pushed-out pins. Use a 'noid light' plugged into the injector connector; it should flash steadily while the engine is cranking or running. If it doesn't flash, the problem is in the wiring or the PCM.
   Typical fix: Repair the damaged section of wire or replace the injector pigtail connector if it's corroded or broken. A pigtail kit is readily available and costs around $10-$30.
   Est. part cost: $10 - $30

Rare But Worth Checking

• Faulty Powertrain Control Module (PCM): → Shop Engine Control Module (ECM) This is the least likely cause. The internal driver circuit for the injector can fail, but all other possibilities must be exhaustively ruled out first. A real-world case on a Dodge Journey with the same engine confirmed a failed PCM driver as the cause after all other tests passed. Before condemning the PCM, verify the wiring harness has perfect continuity and is not shorted to ground.

Diagnosis Steps

1. Scan the vehicle's computer for trouble codes. Confirm P0202 is present, and note any other codes like P0302.
2. Perform a thorough visual inspection of the cylinder 2 fuel injector, its electrical connector, and the surrounding wiring. Look for broken connector tabs, corrosion, or damaged wires, paying special attention to any areas where the harness might rub against engine components.
3. Test the circuit signal. Disconnect the cylinder 2 injector connector and plug a 'noid light' into the harness connector. Start the engine. The light should flash steadily. If it does, the wiring and PCM driver are likely okay, and the injector is the prime suspect. If it does not flash or stays on solid, there is a problem with the wiring or the PCM.
4. If a noid light is unavailable, test the injector resistance. Disconnect the injector and use a multimeter set to Ohms. A good injector should read between 11-18 Ohms. An 'OL' reading means the injector is open and bad.
5. If the injector resistance is good, perform a swap test. Swap the cylinder 2 fuel injector with an adjacent one (like cylinder 1 or 3).
6. Clear the trouble codes with the scan tool.
7. Start the engine and let it run for a minute. Re-scan for codes.
8. If the code has moved to the cylinder you swapped the injector to (e.g., P0201 or P0203), the fuel injector is faulty and needs to be replaced.
9. If code P0202 returns after the swap, the problem lies within the wiring harness or the PCM, and further electrical testing (continuity and voltage checks from the PCM connector) will be needed.

Parts You'll Likely Need

• Fuel Injector (OEM #04891577AC, 04891577AD) — This is the most common cause for a P0202 code on this engine. The internal electronics of the injector fail over time. The latest revision is 04891577AD.
  Trusted brands: Mopar, Bosch, Standard Motor Products (SMP), Delphi
  OEM price range: $100-$150
  Aftermarket price range: $40-$80
• Fuel Injector Connector Pigtail — If the diagnostic steps point to a bad connection, the plastic locking tab on the connector may be broken or the terminals may be corroded, requiring replacement. This is a common failure point.
  Trusted brands: Dorman, Mopar
  OEM price range: $20-$40
  Aftermarket price range: $10-$25

Related Codes That Often Appear With This One

• P0302 — P0302 means 'Cylinder 2 Misfire Detected'. Since P0202 indicates a problem with the fuel supply to cylinder 2, that cylinder cannot fire correctly, which directly causes a misfire. These two codes almost always appear together.
• P0300 — If the injector fault is intermittent or the resulting engine vibration is severe, a P0300 'Random/Multiple Cylinder Misfire' code may appear alongside P0202 as the crankshaft sensor misinterprets the shaking.

Platform-Specific Known Issues

• On AvengerForumz.com, a user with a 2.4L reported solving a P0202 and P0302 code by replacing the cylinder 2 fuel injector after confirming the swap test worked. This is a typical owner experience.
• The wiring harness for the injectors on the 2.4L World Engine can sometimes chafe against a cylinder head bolt stud, leading to an open or short in the circuit. This should be inspected if the injector and connector are found to be in good condition.

Technical Service Bulletins (TSBs) & Recalls

• TSB Bulletin #9002688: A manufacturer service bulletin notes that before replacing injectors for codes P0201 through P0206, technicians should ensure that the wiring loom or the connector in the valve cover gasket is not the actual root cause of the fault.

Mechanic-Grade Diagnostic Values

• Fuel Injector Coil Resistance — expected: 12.0 - 13.0 Ohms at 70°F (21°C). A forum user with a 2.4L measured known-good injectors between 12.4 and 12.8 Ohms.. Failure: A reading of 'OL' (infinite resistance) indicates an open coil. A reading near zero Ohms indicates a shorted coil. Any reading significantly outside the 12-13 Ohm range is suspect.
• Injector Power Supply Voltage (Key On, Engine Off) — expected: Battery Voltage (approx. 12.0 - 12.6V) on the power supply wire at the injector connector (typically a Dark Green/Orange wire).. Failure: Little to no voltage indicates a problem with the power supply from the ASD (Auto Shutdown) relay or the associated wiring/fuse.
• Injector Pulse Width (Live Scan Data) — expected: Approximately 1-3 milliseconds (ms) at a warm, stable idle.. Failure: A value of zero for cylinder 2, or a value that does not change with RPM, points to a control circuit problem or a faulty PCM driver.
• Injector Control Circuit to PCM Continuity — expected: Less than 5.0 Ohms from the control wire pin at the injector connector to the corresponding pin at the PCM connector.. Failure: A reading above 5.0 Ohms, or 'OL', indicates an open or high resistance in the wiring harness that needs to be traced and repaired.

Scan Tool Commands That Help

• Chrysler wiTECH or equivalent professional scanner: Fuel Injector Actuator Test / Injector Kill — This bidirectional test allows the technician to individually disable each fuel injector while the engine is running. When the cylinder 2 injector is commanded 'off', if there is no change in engine idle, it confirms that cylinder was not contributing. This quickly isolates the fault to cylinder 2's fuel or ignition system.

Wiring & Ground Locations

• Powertrain Control Module (PCM) — Located in the driver's side rear corner of the engine compartment.. This is the source of the control signal for the fuel injector. All wiring tests for the injector circuit will ultimately lead back to the PCM's main connectors.
• G111 — On the left (driver's side) shock tower in the engine compartment.. This is a primary engine compartment ground. A poor connection here can cause a variety of seemingly unrelated electrical issues and sensor problems, though it's less likely to isolate to a single injector circuit.
• G302 — Inside the cabin, at the left (driver's side) kick panel.. This is an interior body ground. While less likely to be directly involved in the engine injector circuit, it's part of the vehicle's overall ground scheme.
• Injector #2 Control Wire — From the #2 fuel injector connector back to the PCM connector (C2). The wire color is typically Brown/Light Blue on a 2.4L engine.. This is the specific wire that the PCM uses to ground-pulse the injector. An open or short on this wire is a direct cause of P0202. Continuity must be checked end-to-end.

Real Owner Repair Stories

• ScannerDanner Forum user post (2011 Dodge Avenger 2.4L) — No start, no injector pulse. Multiple sensor circuit high codes (MAP, coolant temp).
  ❌ Tried (didn't work) Replacing injectors with a used set., Replacing the PCM with multiple used units from different but similar vehicles (Chrysler 200, Jeep, Dodge Journey).
  ✅ What actually fixed it The original PCM had failed and took out the shared sensor ground circuit. The subsequent used PCMs were not compatible (despite having the same engine) and would not allow the engine to run for more than a few seconds. The final fix required obtaining a correctly programmed PCM for the specific vehicle model and year. The key learning was that even with the same 2.4L engine, PCMs are not interchangeable across different Chrysler models or even transmission types.
• YouTube video by 'Frugal Prepper's Garage & Garden' (2013 Dodge Avenger 2.4L) — Intermittent no-start, rough running, multiple misfires. Wiggling the main PCM connector (C2) would cause the engine to stumble or stall.
  ❌ Tried (didn't work) Reseating the connector provided a temporary fix.
  ✅ What actually fixed it The main PCM connector (C2) itself was faulty, likely due to corrosion or pin tension issues. The mechanic sourced a replacement connector from a junkyard vehicle, carefully de-pinned and soldered all wires to the new connector. This resolved all the intermittent electrical issues. This highlights that the fault can be in the main connector block, not just the pigtail at the injector.

OEM Part Supersession History

• 04891577AC (and 4891577AB) → 04891577AD — Standard part revision and improvement by the manufacturer.
  Heads up: The latest part number, 04891577AD, is the correct service replacement and is backward compatible with vehicles that originally used the AC or AB versions.

Model Year Variations Within This Range

• 2007-2014: The 2.4L engine was paired with either a 4-speed or a 6-speed automatic transmission during this period. The PCM and its connectors can be different between these two configurations. When sourcing a used PCM or a wiring connector, it is critical to match it not only to the year and engine but also to the transmission type.

Diagnostic Flowchart

Other Known Issues on This Vehicle

Issues unrelated to this code that are worth knowing about as an owner of this generation:

• Electronic Throttle Body (ETB) Failure 🔴 High — Common across all model years, often occurring after 60,000 miles. Causes a red 'lightning bolt' warning light, limp mode (limited RPM/speed), and stalling. (Ref: TSB #9004268 notes limited supply of replacement parts for 2010 and earlier models.)
• Premature Alternator Failure 🔴 High — A widely reported weak spot, especially on the 2008 model year. Failure leads to a battery warning light, dimming/flickering lights, whining/grinding noises, and eventually a no-start or stalling condition.
• Front Subframe / Crossmember Rust 🔴 High — Significant issue in regions using road salt. The front subframe can rust severely, leading to structural integrity concerns. This was subject to a recall (NHTSA #14V393000) for some models. (Ref: NHTSA Campaign ID: 14V393000)
• HVAC Blower Motor Failure 🟠 Medium — The blower motor or its resistor can fail, resulting in no airflow from the vents or the fan only working on the highest setting.

Used vs. New Parts: Buying Guide for This Vehicle

When a used part is the smart pick: A used PCM connector pigtail or a complete engine wiring harness from a junkyard is a smart choice if your issue is a damaged connector or wiring, as these parts are not typically available new from the dealer. A complete used PCM can also be an option, but it MUST be from the exact same year, model, engine, and transmission combination and will require programming.

Donor-vehicle mileage cap: roughly under 120000 miles for the part to have meaningful remaining life.

What to inspect on the donor part:

• For wiring/connectors: Inspect for any signs of corrosion (green crust), brittleness in the plastic, or previous amateur repairs (e.g., tape, non-sealed butt connectors). Ensure locking tabs are intact.
• For a PCM: Check the donor vehicle for signs of flood or fire damage. Ensure the part number on the sticker matches yours exactly.
• Look for a donor vehicle that was hit from the rear, suggesting the engine bay components were likely in good working order at the time of the accident.

OEM-only on this vehicle (don't cheap out):

• Powertrain Control Module (PCM): While a used one can work if perfectly matched and reprogrammed, a new or professionally remanufactured, VIN-programmed PCM is the most reliable (though expensive) fix to avoid compatibility nightmares.

Aftermarket brands forum-validated for this vehicle:

• Bosch
• Delphi
• Standard Motor Products (SMP)

Brands owners have reported issues with on this vehicle:

• Unnamed, no-brand injectors from online marketplaces should be avoided. While cheap, their flow rates and reliability are often inconsistent, which can cause performance issues or premature failure.

Real Owner Stories

Aggregated from forums and TSBs cited above. Mileages and costs reflect what owners reported in those sources.

Related OBD-II Codes

• P0302 — Cylinder 2 Misfire Detected; frequently accompanies P0202 because the circuit failure prevents the injector from delivering fuel, causing a misfire.
• P0201 — Injector Circuit Malfunction - Cylinder 1; often appears during diagnostic 'swap tests' to confirm if a fuel injector failure follows the part to a different cylinder.
• P0203 — Injector Circuit Malfunction - Cylinder 3; often appears during diagnostic 'swap tests' to confirm if a fuel injector failure follows the part to a different cylinder.
• P0204 — Injector Circuit Malfunction - Cylinder 4; shares the same common failure modes (internal coil failure or harness chafing) as P0202 on the 2.4L World Engine.

Frequently Asked Questions