Quick Answer
B0708 means: B0708 refers to a gear shift position sensor circuit issue, indicating a problem with the transmission's ability to detect gear selection.
Can I drive with B0708? Immediate attention is advised to prevent further transmission damage.
Common Questions
What does B0708 mean and how does it affect my car?
The B0708 code signifies that the gear shift position sensor circuit is malfunctioning. This can lead to incorrect gear shifts, affecting drivability and performance. If not fixed, it may worsen over time, potentially causing damage to the transmission.
What are the most common causes of B0708 and how much does it cost to fix?
Common causes include a faulty gear shift position sensor, wiring issues, and improper installation. Repair costs typically range from $150 to $300 for sensor replacement or $100 to $250 for wiring repairs.
Can I drive my car with B0708 or should I stop immediately?
While you may be able to drive the vehicle, it's advisable to limit driving to avoid further damage to the transmission. Ignoring the B0708 code can lead to more severe transmission issues and higher repair costs.
How can I diagnose B0708 myself using GeekOBD APP?
Using the GeekOBD APP, connect to your vehicle's OBD2 port, and retrieve the diagnostic trouble codes. Look for the B0708 code specifically, check freeze frame data, and follow the diagnostic steps outlined to test the gear shift position sensor.
What vehicles are most commonly affected by B0708?
The B0708 code is commonly found in models like the 2010-2015 Honda Accord and 2007-2011 Toyota Camry, among others. It's important to check for any recalls or technical service bulletins related to these models.
How can I prevent B0708 from happening again?
To prevent the B0708 code from recurring, ensure regular maintenance, including inspections of the wiring and connectors. Avoid harsh driving conditions that could strain the transmission, and always use quality parts during repairs.
What is B0708?
The diagnostic trouble code B0708 indicates a problem with the gear shift position sensor circuit. This sensor plays a crucial role in determining the current position of the gear selector in your vehicle's transmission. When the engine control module (ECM) detects an inconsistency in the input from the gear shift position sensor, it triggers the B0708 code. This issue is commonly seen in various models, including the 2010-2015 Honda Accord and the 2007-2011 Toyota Camry. If left unaddressed, a malfunctioning gear shift position sensor can lead to erratic shifting, affecting your vehicle's drivability and potentially causing further transmission damage. Drivers may notice the check engine light illuminating on the dashboard, and they might experience difficulties in shifting gears or find that the vehicle is stuck in a single gear. Ignoring this issue could result in increased repair costs down the line, as transmission problems can escalate quickly. Therefore, addressing the B0708 code promptly is essential for maintaining vehicle performance and safety.
System: B - Body (Airbags, Lighting, Security, Climate Control)
Symptoms
Common symptoms when B0708 is present:
- The check engine light stays on constantly, indicating a persistent issue with the transmission system.
- Drivers may feel the engine hesitating during acceleration, as the transmission struggles to find the correct gear.
- Fuel economy could decrease by 10-15%, as the vehicle may operate inefficiently due to incorrect gear shifting.
- You may experience gear slipping, where the vehicle unexpectedly changes gears or fails to maintain the selected gear.
- In rare cases, the vehicle may enter 'limp mode,' restricting speed and power to protect the engine and transmission.
Possible Causes
Most common causes of B0708 (ordered by frequency):
- {'cause': 'Faulty gear shift position sensor (60%) - The most common reason for the B0708 code is a defective gear shift position sensor, which may fail due to wear and tear or electrical issues.', 'details': 'This sensor is responsible for sending the gear position to the ECM, and if it fails, the ECM cannot accurately determine the gear selection.'}
- {'cause': 'Wiring or connector issues (20%) - Damaged, frayed, or corroded wiring can disrupt the signal from the gear shift position sensor to the ECM.', 'details': 'Ensuring proper connections and inspecting wiring integrity helps prevent this issue.'}
- {'cause': 'Improper installation or calibration (10%) - If the gear shift position sensor was recently replaced or serviced, incorrect installation may lead to misalignment and errors.', 'prevention': 'Always follow manufacturer guidelines and double-check installation procedures.'}
- {'cause': 'Transmission control module (TCM) malfunction (8%) - A failing TCM may misinterpret signals from the gear shift position sensor, leading to erratic behavior.', 'details': 'This is less common but can result in serious transmission issues if not addressed.'}
- {'cause': 'Mechanical issues within the transmission (2%) - Problems such as worn gears or internal transmission damage can also trigger the B0708 code.', 'details': 'These issues require significant repair work and should be diagnosed by a professional.'}
B0708 Repair Costs
Cost Breakdown by Repair Type
Gear Shift Position Sensor Replacement
Replacing a faulty gear shift position sensor is the most effective solution for resolving the B0708 code.
- Total: $150 - $300
- Success rate: 90%
Wiring Repair or Replacement
Repairing or replacing damaged wiring or connectors can also resolve the B0708 code.
- Total: $100 - $250
- Success rate: 80%
Money-Saving Tips for B0708
- 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 B0708 Diagnosis Process
Follow these systematic steps to accurately diagnose B0708. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Initial visual inspection - Begin by checking for obvious signs such as damaged wiring, loose connections, or corrosion around the gear shift position sensor (5-10 minutes)
Step 1: Initial visual inspection - Begin by checking for obvious signs such as damaged wiring, loose connections, or corrosion around the gear shift position sensor (5-10 minutes).
Step 2: Step 2: OBD2 scan with GeekOBD APP - Connect the GeekOBD APP to your vehicle's OBD2 port and retrieve all codes and freeze frame data to understand the fault context (10-15 minutes)
Step 2: OBD2 scan with GeekOBD APP - Connect the GeekOBD APP to your vehicle's OBD2 port and 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 gear shift position sensor and associated wiring for proper voltage and resistance (20-30 minutes)
Step 3: Component testing - Use a multimeter or specific diagnostic tools to test the gear shift position sensor and associated wiring for proper voltage and resistance (20-30 minutes).
Step 4: Step 4: System function test - After any repairs, verify the proper operation of the gear shift position sensor and clear codes using the GeekOBD APP (10-15 minutes)
Step 4: System function test - After any repairs, verify the proper operation of the gear shift position sensor 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 and ensure the check engine light does not reappear (15-20 minutes)
Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure the check engine light does not reappear (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: Gear Shift Position Sensor Replacement in a 2012 Honda Accord
Vehicle: 2012 Honda Accord, 75,000 miles
Problem: Customer reported check engine light and difficulty shifting gears.
Diagnosis: Using the GeekOBD APP, we retrieved the B0708 code and conducted a visual inspection, finding the gear shift position sensor faulty.
Solution: Replaced the gear shift position sensor, ensuring proper installation and calibration.
Cost: $220 (parts: $150, labor: $70)
Result: Customer reported improved shifting and no reoccurrence of the check engine light.
Case Study 2: Wiring Repair on a 2009 Toyota Camry
Vehicle: 2009 Toyota Camry, 85,000 miles
Problem: Check engine light was on, and vehicle was stuck in one gear.
Diagnosis: OBD2 scan revealed B0708, and inspection showed damaged wiring to the gear shift position sensor.
Solution: Repaired the wiring and secured all connections.
Cost: $150 (parts: $50, labor: $100)
Result: The vehicle shifted smoothly after the repair, and the check engine light remained off.