P0202 on 2007-2017 Jeep Compass 2.4L: Injector Circuit Open Fixes

What's Unique About the 2007-2017 Jeep Compass

On the 2.4L 'World' engine used in the Jeep Compass and its platform mates (Patriot, Caliber), this code is straightforward and almost always points to a failed fuel injector. Unlike some V6 engines where injectors are buried under the intake manifold, the injectors on this inline-four engine are relatively accessible on the back of the engine, making diagnosis and replacement a common DIY task. 🎬 See a step-by-step DIY fuel injector replacement walkthrough. The most frequent confusion arises from the 2017 model year, which saw both the first generation (MK) and the new second generation (MP) Compass, which use different injector part numbers.

Generation note: The 2007-2017 year range covers two generations of the Jeep Compass. The first generation (MK) ran from 2007 to 2017. The second generation (MP) began in the 2017 model year. It is critical to identify which 2017 model you have, as they use different fuel injectors.

Symptoms You May Notice

• Check Engine Light is on (may be flashing if misfire is severe)
• Rough, unstable idle
• Engine misfire, which may feel like a shake or shudder
• Poor acceleration and lack of power
• Reduced fuel economy
• Smell of gasoline from the exhaust

Most Likely Causes

1. Failed Cylinder 2 Fuel Injector 🔴 High Probability → Shop Fuel Injector The internal coil windings of the injector can fail over time due to heat cycles and age, creating an open circuit. This is the most common point of failure for this code.
   How to confirm: Measure the resistance of the injector with a multimeter. A good injector should read between 11 and 18 ohms. An infinite resistance reading (OL) means it's open and bad. The most definitive test is to swap the cylinder 2 injector with cylinder 1 or 3. If the code changes to P0201 or P0203, the injector is confirmed faulty.
   Typical fix: Replace the faulty fuel injector. It is often recommended to replace all four as a set, since they have experienced the same wear and tear, but it is not required.
   Est. part cost: $35-$140
2. Wiring Harness or Connector Fault 🟡 Medium Probability Engine vibration and heat can cause wires to break or chafe over time. The connector's locking tab can become brittle and break, leading to a poor connection. On some 2.4L models, the harness is known to chafe on a head bolt stud near the back of the valve cover.
   How to confirm: Visually inspect the wiring going to the cylinder 2 injector for any signs of damage, chafing, or melting. Check that the connector is securely plugged in and the locking tab is engaged. Use a noid light to verify that the connector is receiving a pulse signal from the PCM. 🎬 Watch this guide to diagnosing injector circuit electrical faults. If the light flashes, the wiring and PCM are likely good.
   Typical fix: Repair the damaged section of wire or replace the injector pigtail connector.
   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. This should only be considered after the injector and wiring have been proven to be good. Recall 18V-524 was issued for faulty PCM voltage regulators on some newer models, showing that PCM failures, while rare, do occur.

Diagnosis Steps

1. Verify the presence of code P0202 with an OBD-II scanner. Note any other codes, especially P0302.
🎬 Watch how to troubleshoot P0202 and related misfire codes.
2. Identify cylinder 2. On the 2.4L I4 engine, the cylinders are numbered 1-2-3-4, starting from the passenger side (serpentine belt side) and moving toward the driver's side.
3. Inspect the wiring and connector for cylinder 2's fuel injector. Ensure the connector is fully seated and look for any visible damage, especially where the harness may rub against engine components.
4. Perform an injector swap test. Disconnect the battery. Relieve fuel pressure. Unbolt the fuel rail and lift it up. Swap the fuel injectors from cylinder 2 and cylinder 3. Reassemble, clear the codes, and start the engine. If the code changes to P0203, the fuel injector is bad. If P0202 returns, the problem is in the wiring or PCM.
5. As an alternative to swapping, use a multimeter to test the resistance of the injector. Disconnect the injector and measure the resistance between its two pins. It should be between 11-18 ohms. If it reads as an open circuit (OL), the injector has failed.
6. If the injector tests good, use a noid light to check for a signal at the injector connector. The light should flash when the engine is cranked or running. If it does not flash, the problem is in the wiring or the PCM.

Parts You'll Likely Need

• Fuel Injector (2007-2017 MK Generation) (OEM #04891577AC) — This is the most common failure point for a P0202 code. This part number fits the first-generation (MK) Compass, including early 2017 models. An alternate part number is 04891577AB.
  Trusted brands: Mopar, Standard Motor Products, VDO, Bosch
  OEM price range: $110-$140
  Aftermarket price range: $35-$70
• Fuel Injector (2017+ MP Generation) (OEM #04593986AB) — This part number is for the second-generation (MP) Compass, which began production in 2017. It is crucial to verify your vehicle's generation before purchasing.
  Trusted brands: Mopar, Standard Motor Products
  OEM price range: $130-$160
  Aftermarket price range: $40-$80

Related Codes That Often Appear With This One

• P0302 — This code means 'Cylinder 2 Misfire Detected'. It is a direct and expected result of the P0202 code, as the injector circuit fault prevents fuel delivery, causing the cylinder to misfire.
• P0300 — This code for 'Random/Multiple Cylinder Misfire' can sometimes appear if the severe vibration from the cylinder 2 misfire is misinterpreted by the crankshaft position sensor as misfires on other cylinders.

Technical Service Bulletins (TSBs) & Recalls

• NHTSA ID 18V-524: A recall was issued for some 2018-2019 Jeep models (including Compass) for a faulty PCM. The issue was a suspect voltage regulator chip on the circuit board that could fail, leading to a no-start or stall condition. While this recall is for a newer model year and doesn't specifically cause P0202, it highlights that PCM hardware failures can and do happen on this platform.

Platform-Specific Known Issues

• The 2.4L MultiAir engine can be prone to high oil consumption. While not a direct cause of P0202, low oil levels can affect the MultiAir valvetrain and cause misfires that might be confused with an injector issue. Check your oil level first.

Mechanic-Grade Diagnostic Values

• Fuel Injector Inductive Kick Voltage — expected: ~50 volts. Failure: Absence of this voltage spike when the injector is commanded OFF by the PCM.
• Fuel Injector Pulse Width — expected: 1-5 milliseconds (ms) at idle. Failure: The PCM will set the code if it detects an open circuit when the pulse width is less than 10ms.
• Injector Control Circuit Voltage (at PCM) — expected: Should see battery voltage on the control wire when the key is on, engine off (voltage passes through the injector coil).. Failure: 0 volts indicates an open in the harness or a failed injector coil.

Scan Tool Commands That Help

• wiTECH 2.0: Injector Kill Test / Actuator Test — This bidirectional command allows a technician to individually disable the cylinder 2 fuel injector while the engine is running. If disabling the injector causes no change in the engine's idle, it confirms that cylinder 2 was not contributing, strongly suggesting a fault in that injector's circuit. This is a definitive way to confirm the location of the misfire without getting your hands dirty.

Wiring & Ground Locations

• PCM Connector C2, Pin 9 — On the Powertrain Control Module (PCM), which is located in the left rear of the engine compartment.. This is the specific pin for the 'INJECTOR 2 CONTROL'. The wire color is typically Brown/Dark Blue (BR/DB). This is the ground-side control wire that the PCM pulses to fire the injector. A break in this wire between the PCM and the injector will cause P0202.
• Injector Power Feed — All injectors receive power from a common wire that is typically Dark Green/Orange (DG/OR) on older models, which is energized by the ASD (Auto Shutdown) relay.. While a failure here would likely cause codes for all injectors (not just P0202), a partial short or corrosion affecting only the splice for cylinder 2 could theoretically cause an isolated issue.
• G102 / G104 — These are primary engine grounds. G102 is typically on the front of the engine block, while G104 is on the left side of the engine.. A poor engine ground can cause a host of electrical issues, including erratic sensor readings and injector problems. While not a direct cause of a single injector circuit code, verifying these grounds are clean and tight is a crucial step in any electrical diagnosis.

Real Owner Repair Stories

• Jeep Cherokee Forum (Jeep Cherokee (similar PCM/wiring logic)) — Misfire with codes P0202 and P0203.
  ❌ Tried (didn't work) Initial diagnosis pointed to a faulty Throttle Position Sensor (TPS).
  ✅ What actually fixed it The final fix involved two issues: a recently replaced but faulty aftermarket TPS giving 'dirty' signals, and corroded fuel injector connectors. Cleaning the injector connectors and replacing the TPS with a quality part resolved all issues, including erratic transmission shifting.

OEM Part Supersession History

• 04891577AB → 04891577AC, then RL891577AC (Reman), then 4891577AD — Standard part evolution for minor design or manufacturing process improvements.
  Heads up: All these part numbers are generally interchangeable for the MK generation (2007-2017) 2.4L World Engine. However, always use the latest revision (4891577AD) when available.

Model Year Variations Within This Range

• 2007-2016 (MK Generation): These models use the 2.4L 'World' DOHC engine. The fuel injectors are part number family 04891577AC.
• 2017 (MK and MP Generations): 2017 was a changeover year. The 'old body style' is an MK generation and uses the 04891577AC injector. The 'new body style' is an MP generation with the 2.4L 'Tigershark' MultiAir engine and uses injector part number 04593986AB. The parts are not interchangeable.
• 2017+ (MP Generation): These models use the 2.4L Tigershark MultiAir engine. This engine design is more sensitive to oil quality and level, requiring 0W-20 full synthetic oil. While not directly causing P0202, low oil can cause other misfire issues that could confuse diagnosis.

Diagnostic Flowchart

Other Known Issues on This Vehicle

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

• Premature Subframe Rust/Corrosion 🔴 High — Very common, especially in salt-belt regions. Can become structurally unsafe. An extended warranty (not a full recall) was offered for 10 years, but many owners missed the window. (Ref: Chrysler Extended Warranty X69)
• CVT Transmission Failure 🔴 High — Widespread reports of overheating, whining, slipping, and outright failure, often before 100,000 miles. The 2011 model year is noted as particularly problematic. Failure is often due to the internal steel belt breaking.
• Water Leaks into Cabin 🟠 Medium — Commonly reported from clogged sunroof drains, failed windshield seals, or unsealed body seams at the A-pillar, leading to wet carpets and potential electrical issues. (Ref: STAR Case S1823000053, TSB 08-071-20)
• Totally Integrated Power Module (TIPM) Failure 🔴 High — Can cause a wide range of bizarre electrical problems, including no-start conditions, fuel pump issues, and erratic behavior of lights and wipers.
• Throttle Body Failure 🟠 Medium — Can fail and cause the vehicle to enter 'limp mode' with drastically reduced power.

Used vs. New Parts: Buying Guide for This Vehicle

When a used part is the smart pick: For a single injector failure on a high-mileage vehicle where budget is the primary concern, a used injector from a low-mileage donor can be a cost-effective short-term solution. Since the injectors are relatively easy to access on this engine, the labor risk of a premature failure is lower than on engines requiring intake manifold removal.

Donor-vehicle mileage cap: roughly under 75000 miles for the part to have meaningful remaining life.

What to inspect on the donor part:

• Check for physical damage to the plastic body or connector.
• Ensure the nozzle tip is clean and free of heavy carbon deposits or visible damage.
• If possible, bring a multimeter to the junkyard and test the resistance. It should be between 11-18 ohms. Reject any that read open (OL) or have very low resistance.
• Avoid injectors from engines that show signs of severe overheating or sludge in the oil cap.

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

• Powertrain Control Module (PCM) - Used PCMs often have VIN-lock issues and are not a reliable solution.

Aftermarket brands forum-validated for this vehicle:

• Bosch
• VDO
• Standard Motor Products (SMP)
• Delphi

Brands owners have reported issues with on this vehicle:

• Unbranded, no-name injector sets from online marketplaces are frequently reported to have poor spray patterns, incorrect flow rates, 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; often accompanies P0202 because the injector circuit failure prevents fuel delivery, causing a misfire in that specific cylinder.
• P0201 — Injector Circuit Code for Cylinder 1; if an injector swap test is performed and the fault moves from cylinder 2 to 1, this code will appear.
• P0203 — Injector Circuit Code for Cylinder 3; this code appears if the faulty cylinder 2 injector is moved to cylinder 3 during diagnostic testing.
• P0204 — Injector Circuit Code for Cylinder 4; part of the same injector circuit monitored by the PCM on the 2.4L I4 engine.

Frequently Asked Questions