B0773 - Understanding the Transmission Range Sensor Problem in 2015-2018 Honda Accord and Other Models

Quick Answer

B0773 means: B0773 indicates a malfunction in the transmission range sensor circuit.

Fix: Check and replace faulty components Cost: $150 - $300 Time: 90-180 minutes

Can I drive with B0773? Immediate attention is recommended to prevent potential transmission damage.

Common Questions

What does B0773 mean and how does it affect my car?

B0773 indicates an issue with the transmission range sensor, which can lead to shifting difficulties and unexpected engine behavior. If unresolved, it could cause further transmission damage, affecting drivability and safety.

What are the most common causes of B0773 and how much does it cost to fix?

The most common causes include a faulty transmission range sensor and wiring issues. Repair costs can range from $100 for wiring repairs to $300 for sensor replacement, depending on the specific issue.

Can I drive my car with B0773 or should I stop immediately?

It is not advisable to drive with a B0773 code, as it may lead to transmission shifting problems or even vehicle failure. Immediate attention is recommended to avoid potential hazards.

How can I diagnose B0773 myself using GeekOBD APP?

Using the GeekOBD APP, you can scan for codes, view live data, and check the performance of the transmission range sensor. Pay attention to the voltage readings when shifting through gears.

What vehicles are most commonly affected by B0773?

Commonly affected vehicles include 2015-2018 Honda Accord, Honda Civic, and other models utilizing similar transmission systems. Always check for any recalls or TSBs related to your vehicle.

How can I prevent B0773 from happening again?

Regular maintenance, including checking wiring and connections, can help prevent B0773. Keeping your vehicle's software up-to-date and addressing any signs of wear early can also be effective preventive measures.

What is B0773?

The Diagnostic Trouble Code (DTC) B0773 indicates a malfunction in the transmission range sensor circuit, which is crucial for the proper operation of your vehicle’s automatic transmission. This code is particularly common in vehicles like the 2015-2018 Honda Accord, but it can also appear in other makes and models that utilize electronic transmission controls. When your vehicle's onboard computer detects a discrepancy in the signals from the transmission range sensor—responsible for indicating the current gear position to the engine control module (ECM)—it triggers the B0773 code. This malfunction can lead to various issues, such as difficulty in shifting gears, unexpected disengagement of the transmission, or even the inability to start the engine. Often, this issue is linked to faulty wiring, a defective sensor, or poor connections, which can compromise the transmission's performance and your vehicle's overall drivability. If left unresolved, the problem could lead to more severe transmission damage and costly repairs, making it essential for car owners to address this code promptly.

System: B - Body (Airbags, Lighting, Security, Climate Control)

Symptoms

Common symptoms when B0773 is present:

  • Check engine light illuminates and remains on, indicating a fault in the transmission system.
  • Shifting difficulties occur, such as the transmission failing to engage or disengage properly during gear changes.
  • Engine may fail to start or starts only in certain gear positions, indicating a problem with the range sensor's feedback to the ECM.
  • Unusual transmission behavior, such as slipping or unexpected engagement of gears, leading to a frustrating driving experience.
  • Vehicle may enter 'limp mode', restricting performance to prevent further damage until the issue is resolved.

Possible Causes

Most common causes of B0773 (ordered by frequency):

  1. Faulty transmission range sensor - This is the most common cause of B0773, accounting for about 60% of cases. A defective sensor may fail to send correct signals to the ECM, leading to shifting issues.
  2. Wiring issues - Damaged or corroded wires can disrupt the signal from the transmission range sensor, which may account for 25% of B0773 occurrences. Regular visual inspections can help prevent this.
  3. Poor connections - Loose or dirty connectors can cause intermittent signal problems. Regular cleaning and securing of connections can prevent this issue.
  4. Control module failure - While less common (around 10%), a malfunctioning ECM may misinterpret sensor data, leading to the B0773 code.
  5. Software glitches - Rarely, software issues within the vehicle's computer systems can cause erroneous codes like B0773, requiring updates or reprogramming.

B0773 Repair Costs

Cost Breakdown by Repair Type

Transmission Range Sensor Replacement

Replacing the faulty transmission range sensor with a new, OEM part.

  • Total: $150 - $300
  • Success rate: 95%
Wiring Repair

Repairing damaged wiring or connectors associated with the sensor.

  • Total: $100 - $200
  • Success rate: 85%
Money-Saving Tips for B0773
  • 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 B0773 Diagnosis Process

Follow these systematic steps to accurately diagnose B0773. 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). Look especially at the wiring harness connected to the transmission range sensor.

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 2: Step 2: OBD2 scan with GeekOBD APP - Use a compatible OBD2 scanner or the GeekOBD APP to retrieve all codes and freeze frame data to understand the fault context (10-15 minutes)

Step 2: OBD2 scan with GeekOBD APP - Use a compatible OBD2 scanner or the GeekOBD APP to retrieve all codes and freeze frame data to understand the fault context (10-15 minutes). Make note of related codes.

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 3: Step 3: Component testing - Utilize a multimeter or specific diagnostic tools to test the transmission range sensor's voltage and resistance according to manufacturer specifications (20-30 minutes)

Step 3: Component testing - Utilize a multimeter or specific diagnostic tools to test the transmission range sensor's voltage and resistance according to manufacturer specifications (20-30 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 4: Step 4: System function test - After repairs, verify proper operation by clearing codes and checking for reoccurrence (10-15 minutes)

Step 4: System function test - After repairs, verify proper operation by clearing codes and checking for reoccurrence (10-15 minutes). Ensure all gears engage smoothly.

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and monitor for any reappearance of the B0773 code (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and monitor for any reappearance of the B0773 code (15-20 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.

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, 50,000 miles

Problem: Customer reported intermittent shifting issues and engine light.

Diagnosis: Using the GeekOBD APP, retrieved B0773 code along with related codes suggesting sensor malfunction.

Solution: Replaced the faulty transmission range sensor and cleared the codes.

Cost: $250 (sensor $150, labor $100)

Result: Shifting issues resolved, and the check engine light remained off after the repair.

Case Study 2: Wiring Repair on 2016 Honda Civic

Vehicle: 2016 Honda Civic, 40,000 miles

Problem: Check engine light on, transmission slipping.

Diagnosis: Identified damaged wiring leading to the transmission range sensor during visual inspection.

Solution: Repaired the wiring and secured connections.

Cost: $120 (labor $100, materials $20)

Result: Vehicle performance restored, and no reoccurrence of the B0773 code.

Diagnose B0773

Use GeekOBD APP for professional diagnosis!

  • Real-time data monitoring
  • Advanced diagnostic features
  • Step-by-step repair guidance
  • Professional-grade analysis
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Code Information

Code: B0773
System: Body (Airbags, Lighting, Security, Climate Control)
Severity: HIGH
Category: Body Codes