Quick Answer
P0313 means: P0313 indicates a misfire detected when fuel is low.
Can I drive with P0313? Address promptly to avoid further engine damage.
Common Questions
What does P0313 mean and how does it affect my car?
DTC P0313 indicates a misfire occurring when your fuel level is low, affecting engine performance and efficiency. If not addressed, it can lead to more serious engine issues, including potential damage to the catalytic converter.
What are the most common causes of P0313 and how much does it cost to fix?
Common causes include low fuel levels, faulty spark plugs, and clogged fuel filters. Repair costs range from $100 for a simple fuel system cleaning to $400 for replacing spark plugs and ignition coils.
Can I drive my car with P0313 or should I stop immediately?
While you might still be able to drive your vehicle, it's advisable to address the issue as soon as possible. Continuing to drive could exacerbate the problem and lead to further engine damage.
How can I diagnose P0313 myself using GeekOBD APP?
Using the GeekOBD APP, you can scan for DTCs to confirm P0313, view freeze frame data for context, and monitor engine parameters that may help diagnose the underlying issue.
What vehicles are most commonly affected by P0313?
This code is frequently seen in vehicles like the 2009-2018 Ford F-150, 2010-2015 Chevrolet Equinox, and 2013-2017 Dodge Ram 1500. Always check for any recalls or technical service bulletins related to these codes.
How can I prevent P0313 from happening again?
To prevent P0313 from recurring, maintain proper fuel levels, regularly check and replace spark plugs, and perform routine fuel system maintenance.
What is P0313?
DTC P0313 indicates that your vehicle's engine control module (ECM) has detected a misfire in the engine when the fuel level is low. This code is particularly common in vehicles like the 2009-2018 Ford F-150 and other models that utilize a similar engine management system. When the fuel tank is nearly empty, the fuel pump can struggle to provide adequate fuel pressure, potentially leading to a misfire. A misfire occurs when one or more cylinders in the engine fail to ignite the fuel-air mixture properly. This can result in poor engine performance, increased emissions, and even potential engine damage if left unaddressed. Car owners may notice symptoms like the check engine light illuminating, rough idling, or loss of power during acceleration. Ignoring this code can lead to severe engine complications, making it vital to act quickly. It is important to note that while the P0313 code itself points to issues tied to low fuel levels, it may also indicate other underlying problems like ignition system failures or fuel delivery issues. Therefore, a thorough diagnostic process is essential for effective resolution.
System: P - Powertrain (Engine, Transmission, Emissions)
Symptoms
Common symptoms when P0313 is present:
- Check engine light stays on constantly, indicating a persistent issue that requires immediate attention.
- Engine hesitates during acceleration, making it difficult to maintain speed or respond rapidly to pedal input.
- Fuel economy decreased by 10-15%, leading to more frequent trips to the gas station and higher overall operating costs.
- Rough idling when stopped at traffic lights, causing vibrations in the cabin and discomfort for passengers.
- Increased engine noise, which may be audible as a knocking or pinging sound, especially under load.
Possible Causes
Most common causes of P0313 (ordered by frequency):
- Low fuel level - 60% likelihood. When the fuel tank is low, the fuel pump may not maintain adequate pressure, causing misfires.
- Faulty spark plugs or ignition coils - 25% likelihood. Worn or damaged parts can lead to poor combustion, resulting in misfires.
- Clogged fuel filter - 10% likelihood. A blocked filter restricts fuel flow, which may be exacerbated when the fuel level is low.
- Vacuum leaks - 3% likelihood. Leaks can disrupt the air-fuel mixture, leading to misfire codes.
- Fuel pump failure - 2% likelihood. A failing pump cannot supply enough fuel, particularly when the tank is nearing empty.
P0313 Repair Costs
Cost Breakdown by Repair Type
Replace Spark Plugs and Ignition Coils
Replacing worn spark plugs and faulty ignition coils can resolve misfire issues caused by ignition problems.
- Total: $200 - $400
- Success rate: 85%
Fuel System Cleaning
Cleaning the fuel system may help if clogging is suspected, particularly with the fuel filter.
- Total: $100 - $200
- Success rate: 70%
Money-Saving Tips for P0313
- 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 P0313 Diagnosis Process
Follow these systematic steps to accurately diagnose P0313. 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 (5-10 minutes)
Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (5-10 minutes).
Step 2: Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes)
Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes).
Step 3: Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components like spark plugs and coils (20-30 minutes)
Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components like spark plugs and coils (20-30 minutes).
Step 4: Step 4: System function test - Verify proper operation after repairs and clear codes using the GeekOBD APP (10-15 minutes)
Step 4: System function test - Verify proper operation after repairs and clear codes using the GeekOBD APP (10-15 minutes).
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success (15-20 minutes)
Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success (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: F-150 Misfire Diagnosis and Repair
Vehicle: 2015 Ford F-150, 75,000 miles
Problem: The customer reported a check engine light with rough idling and hesitation during acceleration.
Diagnosis: Using the GeekOBD APP, the P0313 code was retrieved along with data indicating a low fuel level. A visual inspection revealed worn spark plugs.
Solution: Replaced the spark plugs and cleared the codes. The vehicle was road-tested to confirm the repair.
Cost: $250 (spark plugs: $100, labor: $150)
Result: The vehicle ran smoothly post-repair, with no further issues reported.
Case Study 2: Equinox Fuel System Cleaning
Vehicle: 2014 Chevrolet Equinox, 60,000 miles
Problem: Customer complained of poor acceleration and a check engine light indicating P0313.
Diagnosis: A scan revealed the P0313 code. Fuel pressure tests indicated a clogged filter.
Solution: Performed a fuel system cleaning and replaced the fuel filter.
Cost: $150 (cleaning: $100, filter: $50)
Result: Post-repair, the Equinox showed improved acceleration and fuel economy.