Quick Answer
P073A means: P073A indicates a transmission range sensor performance issue.
Can I drive with P073A? Immediate attention is recommended to prevent further transmission damage.
Common Questions
What does P073A mean and how does it affect my car?
P073A indicates that your vehicle's transmission range sensor is not performing correctly. This can lead to issues like erratic shifting, decreased fuel efficiency, and even potential transmission damage if not addressed promptly.
What are the most common causes of P073A and how much does it cost to fix?
The most common causes include a faulty transmission range sensor, wiring issues, and a malfunctioning TCM. Repair costs typically range from $200 to $400 for sensor replacement, with additional costs for wiring repairs as needed.
Can I drive my car with P073A or should I stop immediately?
While you may be able to drive a short distance, it's strongly advised to seek immediate attention. Continuing to drive could lead to more severe transmission damage and safety risks.
How can I diagnose P073A myself using GeekOBD APP?
Using the GeekOBD APP, you can scan for OBD2 trouble codes, view freeze frame data for context, and monitor live data from the transmission range sensor to assess its performance.
What vehicles are most commonly affected by P073A?
Commonly affected vehicles include the 2011-2015 Ford Focus and the 2010-2014 Chevrolet Malibu, among others. Be sure to check for any recalls or technical service bulletins related to your specific model.
How can I prevent P073A from happening again?
Regular maintenance, including checking and replacing transmission fluid, inspecting wiring, and keeping the vehicle's software updated, can help prevent the recurrence of P073A.
What is P073A?
The P073A diagnostic trouble code indicates a problem with the transmission range sensor, specifically that the sensor's performance is outside the expected range. This typically occurs in vehicles where the transmission control module (TCM) is unable to determine the correct position of the transmission, which can lead to various driving issues. Commonly found in models such as the 2011-2015 Ford Focus and 2010-2014 Chevrolet Malibu, this code can trigger a check engine light and may result in erratic shifting behavior, poor acceleration, and decreased fuel efficiency. The sensor itself is responsible for relaying the transmission's position to the TCM, which adjusts the engine’s power accordingly. If the sensor fails or provides incorrect data, it can cause the vehicle to shift improperly or even enter a 'limp' mode, limiting acceleration. Ignoring this code can lead to further transmission damage, making timely diagnosis and repair crucial for maintaining vehicle performance and safety.
System: P - Powertrain (Engine, Transmission, Emissions)
Symptoms
Common symptoms when P073A is present:
- Check engine light stays on constantly, indicating a malfunction in the transmission system.
- Engine hesitates during acceleration, leading to a potentially unsafe driving experience.
- Fuel economy decreased by 10-15%, resulting in higher fuel costs.
- Shifting delays or harsh shifts may occur, especially when changing from park to drive.
- Unwanted downshifts can happen, causing the vehicle to unexpectedly decelerate.
Possible Causes
Most common causes of P073A (ordered by frequency):
- Faulty transmission range sensor is the most common cause, occurring in about 60% of cases. It may fail due to wear and tear or electrical issues.
- Wiring issues, such as damaged or corroded wires connected to the transmission range sensor, account for about 20% of cases. Regular inspections can help prevent this.
- A malfunctioning transmission control module (TCM) can lead to incorrect readings and is responsible for approximately 15% of occurrences. Keeping software up-to-date can help avoid this.
- Less common but serious causes include low transmission fluid levels, leading to overheating and potential transmission failure.
- Rarely, internal transmission failure can occur, making repairs more complex and costly.
P073A Repair Costs
Cost Breakdown by Repair Type
Transmission Range Sensor Replacement
Replacing the faulty transmission range sensor to restore proper functionality.
- Total: $200 - $400
- Success rate: 85%
Wiring Repair
Repairing or replacing damaged wiring connected to the transmission range sensor.
- Total: $100 - $250
- Success rate: 75%
Money-Saving Tips for P073A
- 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 P073A Diagnosis Process
Follow these systematic steps to accurately diagnose P073A. 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 voltage and resistance (20-30 minutes)
Step 3: Component testing - Use a multimeter or specific diagnostic tools to test the transmission range sensor voltage and resistance (20-30 minutes).
Step 4: Step 4: System function test - Verify proper operation after repairs and clear codes to ensure the issue has been resolved (10-15 minutes)
Step 4: System function test - Verify proper operation after repairs and clear codes to ensure the issue has been resolved (10-15 minutes).
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and monitor for any returning symptoms (15-20 minutes)
Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and monitor for any returning symptoms (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 a 2012 Ford Focus
Vehicle: 2012 Ford Focus, 85,000 miles
Problem: Customer reported check engine light and rough shifting.
Diagnosis: After scanning with GeekOBD, P073A was identified. Visual inspection revealed a faulty transmission range sensor.
Solution: Replaced the transmission range sensor and cleared the codes.
Cost: $300 (sensor $180, labor $120)
Result: Customer reported smooth shifting and no check engine light after repair.
Case Study 2: Wiring Repair on a 2013 Chevrolet Malibu
Vehicle: 2013 Chevrolet Malibu, 90,000 miles
Problem: Driver experienced erratic shifting and check engine light.
Diagnosis: Diagnostic testing showed P073A; inspection revealed damaged wiring.
Solution: Repaired wiring connections and replaced a corroded connector.
Cost: $150 (labor $100, parts $50)
Result: Post-repair, the vehicle performed well with no further issues.