Quick Answer
P0928 means: P0928 means the transmission range sensor is sending a high input signal, indicating potential issues with gear selection.
Can I drive with P0928? Immediate attention is recommended to prevent further transmission damage.
Common Questions
What does P0928 mean and how does it affect my car?
The P0928 code indicates a high input from the transmission range sensor, which can lead to transmission issues. If ignored, it may cause erratic shifting and ultimately result in more severe transmission problems.
What are the most common causes of P0928 and how much does it cost to fix?
The most common cause is a faulty transmission range sensor, which can cost between $150 to $300 to replace. Wiring issues can also contribute to this code, with repair costs ranging from $100 to $200.
Can I drive my car with P0928 or should I stop immediately?
It is advisable to stop driving if you see the P0928 code. Continuing to drive may worsen the problem, leading to potential transmission failure.
How can I diagnose P0928 myself using GeekOBD APP?
Using the GeekOBD APP, you can scan for trouble codes, view live data from the transmission range sensor, and see freeze frame data for context. This information will help you understand the severity of the issue.
What vehicles are most commonly affected by P0928?
The P0928 code is frequently seen in vehicles like the 2015-2018 Honda Accord and the 2016-2019 Toyota Camry, among others. Be sure to check for any recalls or service bulletins related to this code for your specific model.
How can I prevent P0928 from happening again?
Regular maintenance, including inspections of the transmission system and addressing any wiring issues promptly, can help prevent the recurrence of the P0928 code.
What is P0928?
The diagnostic trouble code P0928 indicates a high input signal from the transmission range sensor circuit. This sensor is crucial for detecting the position of the gear selector in your vehicle's transmission system, which ensures that the correct gear is engaged. When the vehicle's onboard computer detects that the signal from this sensor is higher than expected, it triggers this error code. The P0928 code can lead to various issues, such as erratic shifting, difficulties in changing gears, and poor fuel economy. Additionally, it can activate the Check Engine Light, which can be concerning for drivers. If left unaddressed, this problem may exacerbate and lead to more severe transmission issues, potentially resulting in costly repairs. Understanding this code and its implications can help vehicle owners take proactive steps to ensure their vehicle's performance and longevity.
System: P - Powertrain (Engine, Transmission, Emissions)
Symptoms
Common symptoms when P0928 is present:
- Check engine light remains illuminated, signaling the need for a diagnostic check.
- Engine hesitates during acceleration, making it difficult to accelerate smoothly.
- Fuel economy decreased by 10-15%, leading to higher fuel costs.
- Transmission may slip or fail to engage properly, causing erratic behavior.
- Unexpected gear shifts occur, leading to a jerky driving experience.
Possible Causes
Most common causes of P0928 (ordered by frequency):
- Faulty transmission range sensor - This is the most common cause, with a likelihood of about 60%. If the sensor malfunctions, it can send incorrect signals to the vehicle's computer.
- Wiring issues - Damaged or corroded wiring can lead to poor connections, causing high input signals. This is the second most common cause, occurring in about 25% of cases.
- Transmission control module (TCM) failure - A less common but serious issue, where the TCM may misinterpret sensor data, leading to miscommunication between the engine and transmission.
- Software glitches - In some instances, the vehicle's software may need updating, which can occur in about 10% of cases.
- Less common mechanical failures - In rare cases, internal transmission issues may cause false readings from the range sensor.
P0928 Repair Costs
Cost Breakdown by Repair Type
Transmission Range Sensor Replacement
Replacing the faulty transmission range sensor to restore normal operation.
- Total: $150 - $300
- Success rate: 85%
Wiring Repair
Repairing or replacing damaged wiring to ensure proper sensor function.
- Total: $100 - $200
- Success rate: 75%
Money-Saving Tips for P0928
- 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 P0928 Diagnosis Process
Follow these systematic steps to accurately diagnose P0928. 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 the transmission range sensor and its wiring (20-30 minutes)
Step 3: Component testing - Use a multimeter or specific diagnostic tools to test the transmission range sensor and its wiring (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: Transmission Range Sensor Replacement on 2017 Honda Accord
Vehicle: 2017 Honda Accord, 45,000 miles
Problem: Customer reported the Check Engine Light was on, and the vehicle hesitated during acceleration.
Diagnosis: After running a diagnostic check with the GeekOBD APP, P0928 was confirmed. Visual inspection revealed a faulty transmission range sensor.
Solution: Replaced the transmission range sensor and cleared the code using the GeekOBD APP.
Cost: $250 (sensor $150, labor $100)
Result: The Check Engine Light turned off, and the vehicle accelerated smoothly without further issues.
Case Study 2: Wiring Repair on 2016 Toyota Camry
Vehicle: 2016 Toyota Camry, 60,000 miles
Problem: Customer experienced unexpected gear shifts and a persistent Check Engine Light.
Diagnosis: P0928 was retrieved using the GeekOBD APP. Inspection found damaged wiring leading to the transmission range sensor.
Solution: Repaired the wiring and secured all connections.
Cost: $150 (wiring repair and labor)
Result: Restored proper shifting and eliminated the Check Engine Light.