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2006 Dodge Stratus 4-Cylinder Engine P0301 Misfire: Diagnosis, Repair Attempts & PCM Programming Issues

Model: 2006 Dodge Stratus Fault Code: P0301 Posted: 2014-03-15 16:05

I've been experiencing recurring engine misfire issues with my 2006 Dodge Stratus since November. The problem consistently shows up with a blinking Check Engine Light and engine vibration, particularly in cylinder 1. Here's what I've observed: 1. November: Car started with a blinking check engine light and shaking. After shutting it off for five minutes and restarting, the issue persisted but became steady. A diagnostic tool revealed a misfire in cylinder 3. I used fuel injector cleaner, which temporarily resolved the issue—light went off the next day. 2. Early December: Same symptoms—hard start and blinking check engine light. Diagnostic showed cylinder 1 misfire. I replaced spark plugs and wires; the light stayed off for a day. 3. Mid-December: Repeated cycle with cylinder 1 misfire and camshaft sensor error. After replacing the camshaft sensor, the light went off after one day. 4. Two weeks later: Cylinder 1 misfire again. I replaced the ignition coil pack. During installation, the technician noticed frayed, heat-melted wires from the old unit and wrapped the three wires together with electrical tape. The issue seemed to resolve temporarily. 5. Late January: Misfire returned—this time during driving, not at startup. When decelerating, engine lost power. After a five-minute rest, I could restart it successfully. The check engine light went off again after one or two days. 6. February: Blinking CEL reappeared while driving. At first, the car would only start with the foot on the gas pedal—removing it caused stalling. Spark plugs and wires were replaced again, but no improvement. Car still wouldn't start under normal conditions. 7. I took it to a different mechanic who suspected an electrical short from the previous coil pack repair. He claimed that wrapping the wires near the ignition coil created a short in the Powertrain Control Module (PCM). He recommended replacing and programming the PCM. The local Dodge dealership installed a new PCM, but their service department stated that the PCM failed to accept programming and could not communicate with the vehicle’s main computer. I am now considering giving up on this vehicle due to repeated failures and high repair costs. I have not yet tested the fuel injectors or performed a full wiring inspection. While I understand electrical issues in vehicles often require trial-and-error troubleshooting, I'm concerned about whether there's a deeper underlying cause—such as a faulty PCM, wiring harness fault, or sensor issue. Could anyone share insights into possible root causes for persistent P0301 misfires on the 2006 Dodge Stratus? Are there known issues with the original PCM or wiring in this model year? Any suggestions for next steps—such as fuel injector testing, wiring continuity checks, or alternative diagnostics? Thank you in advance for any advice or experiences from owners of similar vehicles.

Related fault codes
P0301
Comments (5)
Anonymous 2014-03-16 09:26

Is the only fault code P0301? Is the original PCM still installed? Has the issue been fully resolved—can the car start normally now? Are there any remote starters in use? Were OEM spark plugs used during repairs? These details would help better understand the current condition of your vehicle.

Anonymous 2014-03-16 12:54

Hi Kev, I've confirmed that P0301 has been the recurring code over several months. The original PCM is still in the car. The issue remains unresolved—the car cannot start properly after the new PCM installation. The dealership reported that the PCM failed to accept programming and could not communicate with the vehicle's main computer. No remote starter is present. I used Champion brand spark plugs, installed carefully using a gearwrench. Any insights would be greatly appreciated.

Anonymous 2014-03-16 13:56

I need to clarify: Did the dealership actually fail to program the PCM? They have a scanner specifically designed for this vehicle model and possess all required software. A replacement PCM is not uncommon, but if they can't program it or communicate with the system, something is missing in the process. When you shift into run mode, does the Check Engine Light activate? Can you use a digital multimeter (DVOM)? We should check ALDL cavity #16 for 12V and cavity #4 for ground continuity—this could point to wiring or sensor issues.

Anonymous 2014-03-17 09:53

Hi, can you clarify what you mean that the dealership couldn't program a PCM even though they have a scanner designed for this vehicle? I want to ensure there's no misrepresentation or misleading diagnosis. The wires were tested and appear grounded. Unfortunately, I don’t own a DVOM—would a basic voltage test be sufficient?

Anonymous 2014-03-17 11:17

The dealership has the correct scanner for this vehicle system and all necessary software. A replacement PCM is not rare but may require specific tools or procedures. If they diagnosed it, installed the PCM, yet cannot program it or establish communication—then either the installation was incorrect or there's a missing component (like proper programming key or software version). If the PCM can't communicate with the vehicle, how could they have made the diagnosis? This suggests a deeper issue in the repair process. Were you responsible for supplying the PCM or did they provide it?