Quick Answer
C0C73 means: C0C73 indicates a fault in the PCM or a related sensor.
Can I drive with C0C73? Immediate attention is recommended to avoid further damage.
Common Questions
What does C0C73 mean and how does it affect my car?
C0C73 signifies a problem with the powertrain control module or a related component, which can lead to reduced engine performance and efficiency. Ignoring this issue may result in more severe problems down the line.
What are the most common causes of C0C73 and how much does it cost to fix?
Common causes include a faulty PCM and malfunctioning sensors, with repair costs ranging from $100 for wiring repairs to $1200 for a PCM replacement.
Can I drive my car with C0C73 or should I stop immediately?
It's best to stop driving immediately if you see the C0C73 code, as continued operation may lead to serious engine damage and costly repairs.
How can I diagnose C0C73 myself using GeekOBD APP?
Using GeekOBD APP, you can perform an OBD2 scan to retrieve the C0C73 code, view freeze frame data, and monitor vehicle sensor readings to identify potential issues.
What vehicles are most commonly affected by C0C73?
Vehicles such as the 2015-2018 Ford F-150 and 2016-2019 Honda Civic are frequently reported with the C0C73 code, particularly those with multiple electrical components.
How can I prevent C0C73 from happening again?
Regular vehicle maintenance, including electrical system inspections and timely software updates, can help prevent the recurrence of C0C73.
What is C0C73?
DTC C0C73 is a diagnostic trouble code that indicates a malfunction related to the vehicle's powertrain control module (PCM) or a specific sensor within the system. This code is often seen in various vehicles, including models from manufacturers like Ford, Honda, and Toyota, particularly those produced between 2015 and 2020. When this code is triggered, it means that the PCM has detected an issue that affects the vehicle's performance, fuel efficiency, or emissions system. The implications of a C0C73 code can include impaired engine performance, increased fuel consumption, and potential failure to pass emissions tests. As a result, you'll likely notice symptoms such as a persistent check engine light, reduced acceleration, or unusual engine noises. If ignored, the underlying issue may lead to more severe engine problems or costly repairs down the line. It's crucial for vehicle owners to address this code promptly to prevent further damage and ensure that their vehicle operates safely and efficiently.
System: C - Chassis (ABS, Steering, Suspension)
Symptoms
Common symptoms when C0C73 is present:
- Check engine light illuminates and stays on, indicating a persistent issue that needs addressing.
- Engine experiences hesitation during acceleration, making driving less smooth and potentially dangerous.
- Fuel economy decreases noticeably, often by 10-15%, leading to increased spending at the pump.
- Unusual engine noises may occur, such as knocking or pinging, which can indicate underlying mechanical issues.
- Vehicle may fail emissions testing, leading to potential fines or the need for immediate repairs.
Possible Causes
Most common causes of C0C73 (ordered by frequency):
- The most common cause of C0C73, occurring in about 50% of cases, is a faulty powertrain control module (PCM) that fails to communicate with other vehicle systems.
- A second frequent cause, accounting for roughly 30%, is a malfunctioning sensor, such as the throttle position sensor, which can lead to misreporting of engine parameters.
- A third cause is damaged wiring or poor connections within the PCM circuit, which can often be prevented by regular vehicle maintenance and inspection.
- Less common but serious causes include internal engine problems, such as a failing fuel injector or a vacuum leak that can significantly affect performance.
- A rare cause, but one to keep in mind, is software issues within the PCM that may require an update or reprogramming.
C0C73 Repair Costs
Cost Breakdown by Repair Type
PCM Replacement
Replacing the faulty powertrain control module with a new or reconditioned unit.
- Total: $600 - $1200
- Success rate: 85%
Sensor Replacement
Replacing malfunctioning sensors like the throttle position sensor.
- Total: $150 - $400
- Success rate: 90%
Wiring Repair
Repairing damaged wiring or poor connections in the PCM circuit.
- Total: $100 - $300
- Success rate: 75%
Money-Saving Tips for C0C73
- Start with the most common and least expensive repairs first
- Use GeekOBD APP to confirm diagnosis before replacing expensive parts
- Consider preventive maintenance to avoid future occurrences
- Compare prices for OEM vs aftermarket parts based on your needs
- Address the issue promptly to prevent more expensive secondary damage
Diagnostic Steps
Professional C0C73 Diagnosis Process
Follow these systematic steps to accurately diagnose C0C73. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion, which may take about 5-10 minutes
Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion, which may take about 5-10 minutes.
Step 2: Step 2: OBD2 scan using GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context
Step 2: OBD2 scan using GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context. This usually takes 10-15 minutes.
Step 3: Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components, which may take about 20-30 minutes
Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components, which may take about 20-30 minutes.
Step 4: Step 4: System function test - After repairs, verify proper operation and clear codes; this step typically requires 10-15 minutes
Step 4: System function test - After repairs, verify proper operation and clear codes; this step typically requires 10-15 minutes.
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success, which might take 15-20 minutes
Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success, which might take 15-20 minutes.
Important Notes
- Always verify the repair with GeekOBD APP after completing diagnostic steps
- Clear codes and test drive to ensure the problem is resolved
- Address underlying causes to prevent code recurrence
Real Repair Case Studies
Case Study 1: PCM Replacement on 2016 Ford F-150
Vehicle: 2016 Ford F-150, 45,000 miles
Problem: Customer reported a persistent check engine light and poor fuel economy.
Diagnosis: After running an OBD2 scan, C0C73 was identified, indicating a PCM failure.
Solution: Replaced the PCM with a new unit and reprogrammed it.
Cost: $950 (parts $800, labor $150)
Result: Post-repair, the check engine light was cleared, and fuel economy returned to normal levels.
Case Study 2: Throttle Position Sensor Replacement on 2018 Honda Civic
Vehicle: 2018 Honda Civic, 30,000 miles
Problem: Vehicle hesitated during acceleration, and the check engine light was on.
Diagnosis: Diagnostic testing revealed C0C73, linked to a faulty throttle position sensor.
Solution: Replaced the throttle position sensor.
Cost: $200 (parts $120, labor $80)
Result: The vehicle's performance improved significantly, with no further issues reported.