Quick Answer
P0228 means: P0228 indicates a performance issue with the Throttle Position Sensor 2 circuit.
Can I drive with P0228? Immediate attention is recommended as it affects engine performance and can lead to stalling.
Common Questions
What does P0228 mean and how does it affect my car?
The P0228 code indicates a problem with the Throttle Position Sensor 2 circuit, which monitors the throttle plate's position. This can lead to performance issues like rough idling, stalling, and decreased fuel efficiency. Ignoring this code can worsen engine problems over time.
What are the most common causes of P0228 and how much does it cost to fix?
Common causes include a faulty throttle position sensor, damaged wiring, or issues with the ECM. Repair costs can range from $100 to $300, depending on whether you need a sensor replacement or wiring repair.
Can I drive my car with P0228 or should I stop immediately?
It's advisable to stop driving if you see a P0228 code, as it can lead to stalling and unsafe driving conditions. Addressing the issue quickly improves safety and prevents further damage.
How can I diagnose P0228 myself using GeekOBD APP?
To diagnose P0228, use the GeekOBD APP to scan for codes and check freeze frame data. Inspect the TPS wiring and connectors visually, and measure voltage using a multimeter to identify any faults.
What vehicles are most commonly affected by P0228?
P0228 is commonly found in vehicles like the 2010-2015 Honda Accord and 2006-2012 Ford Fusion. Always check for any recalls or Technical Service Bulletins (TSBs) related to the throttle system.
How can I prevent P0228 from happening again?
Regular maintenance, including inspecting electrical connections and keeping the throttle body clean, can help prevent P0228. Additionally, using quality fuel and addressing engine performance issues promptly can reduce the risk.
What is P0228?
The diagnostic trouble code (DTC) P0228 indicates a problem with the Throttle Position Sensor (TPS) 2 circuit, specifically relating to its range or performance. This sensor is crucial for monitoring the position of the throttle plate in the engine's intake manifold, allowing the Engine Control Module (ECM) to adjust the air-fuel mixture and engine performance. When the TPS 2 circuit reports an out-of-range signal, it can trigger the check engine light and lead to performance issues like reduced power, stalling, or poor fuel economy. Common vehicles affected by this code include the 2010-2015 Honda Accord and 2006-2012 Ford Fusion. If left unaddressed, a malfunctioning TPS can lead to more severe engine problems and costly repairs, as it directly affects engine performance and drivability. Resolving a P0228 code typically involves inspecting the TPS and its wiring for damage, testing components for proper voltage and ground, and replacing any faulty parts. Drivers should seek a qualified technician to diagnose and rectify the issue promptly to avoid further complications.
System: P - Powertrain (Engine, Transmission, Emissions)
Symptoms
Common symptoms when P0228 is present:
- The check engine light remains illuminated, indicating a persistent issue that needs attention.
- The engine hesitates or stutters during acceleration, making driving feel unsafe.
- Fuel economy drops significantly, sometimes by 10-15%, leading to increased fuel expenses.
- Unresponsive throttle when pressing the accelerator, which can be alarming during overtaking.
- Rough idling or stalling at stops, causing the engine to shut off unexpectedly.
Possible Causes
Most common causes of P0228 (ordered by frequency):
- The most common cause of P0228 is a faulty Throttle Position Sensor 2, with a likelihood of about 60%. If the sensor is damaged or malfunctioning, it will send incorrect data to the ECM.
- A second potential cause is damaged wiring or poor connections in the TPS circuit, which can lead to signal loss. This issue often stems from wear and tear or corrosion over time.
- Another cause can be a malfunctioning Engine Control Module (ECM), which may incorrectly interpret data from the TPS, though this is less common. Regular software updates can help prevent this.
- A less common but serious cause could be a vacuum leak in the intake system, affecting air-fuel mixture and leading to performance issues that can mimic TPS problems.
- Rarely, a failing accelerator pedal position sensor can cause similar symptoms, as it works in conjunction with the TPS to regulate engine performance.
P0228 Repair Costs
Cost Breakdown by Repair Type
Throttle Position Sensor Replacement
Replacing a faulty TPS with a new part.
- Total: $150 - $300
- Success rate: 85%
Wiring Repair
Repairing or replacing damaged wiring or connectors in the TPS circuit.
- Total: $100 - $200
- Success rate: 90%
Money-Saving Tips for P0228
- 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 P0228 Diagnosis Process
Follow these systematic steps to accurately diagnose P0228. 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 typically takes 5-10 minutes
Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion, which typically takes 5-10 minutes.
Step 2: Step 2: OBD2 scan with a diagnostic tool - Use the GeekOBD APP to retrieve all codes and freeze frame data to understand the fault context, which should take about 10-15 minutes
Step 2: OBD2 scan with a diagnostic tool - Use the GeekOBD APP to retrieve all codes and freeze frame data to understand the fault context, which should take about 10-15 minutes.
Step 3: Step 3: Component testing - Use a multimeter to check voltage and resistance of the TPS and related wiring, which may take 20-30 minutes
Step 3: Component testing - Use a multimeter to check voltage and resistance of the TPS and related wiring, which may take 20-30 minutes.
Step 4: Step 4: System function test - After repairs, verify proper operation of the TPS and clear codes using the GeekOBD APP, taking around 10-15 minutes
Step 4: System function test - After repairs, verify proper operation of the TPS and clear codes using the GeekOBD APP, taking around 10-15 minutes.
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to ensure the issue is resolved, which could take 15-20 minutes
Step 5: Road test verification - Drive the vehicle under various conditions to ensure the issue is resolved, which could 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: Throttle Position Sensor Replacement on 2012 Honda Accord
Vehicle: 2012 Honda Accord, 85,000 miles
Problem: Customer reported check engine light and poor acceleration.
Diagnosis: After scanning with GeekOBD APP, P0228 was the only code present. Visual inspection revealed a damaged TPS.
Solution: Replaced the throttle position sensor and cleared the DTC.
Cost: $250 (parts: $150, labor: $100)
Result: The vehicle experienced improved acceleration and the check engine light remained off.
Case Study 2: Wiring Repair for 2008 Ford Fusion
Vehicle: 2008 Ford Fusion, 120,000 miles
Problem: Customer complained of stalling and engine hesitation.
Diagnosis: GeekOBD APP revealed P0228 along with a visual inspection indicating frayed wires.
Solution: Repaired the damaged wiring in the TPS circuit.
Cost: $150 (parts: $50, labor: $100)
Result: Post-repair, the Fusion ran smoothly without any stalling issues.