P0702 - Transmission Range Sensor Circuit Range/Performance Problem in 2013-2018 Ford F-150 and 2010-2016 Chevrolet Camaro

Quick Answer

P0702 means: P0702 indicates a problem with the transmission range sensor circuit performance.

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

Can I drive with P0702? Immediate attention is recommended to avoid transmission issues.

Common Questions

What does P0702 mean and how does it affect my car?

The P0702 code indicates a problem with the transmission range sensor circuit. This can affect your car's ability to shift gears correctly, leading to potential safety issues and performance problems. If ignored, you may experience rough shifting, decreased fuel efficiency, or even a failure to start your vehicle.

What are the most common causes of P0702 and how much does it cost to fix?

Common causes of the P0702 code include a faulty transmission range sensor, damaged wiring, or, in rare cases, a malfunctioning ECM. Repair costs can range from $100 for wiring repairs to $1,200 for ECM replacement, depending on the specific issue.

Can I drive my car with P0702 or should I stop immediately?

It's not advisable to drive your vehicle with a P0702 code. The issues related to this code can lead to unsafe driving conditions, such as unexpected gear shifts or difficulty starting the vehicle. It's best to have the issue diagnosed and repaired as soon as possible.

How can I diagnose P0702 myself using GeekOBD APP?

To diagnose P0702 using the GeekOBD APP, start by connecting the app to your vehicle's OBD2 port. Scan for trouble codes and review any freeze frame data. Look for additional codes that might provide context on the issue. Use the app to clear codes after repairs and monitor for reoccurrence.

What vehicles are most commonly affected by P0702?

The P0702 code is commonly found in vehicles such as the 2013-2018 Ford F-150, 2010-2016 Chevrolet Camaro, and many other Ford and Chevrolet models. Be sure to check for any recalls or technical service bulletins (TSBs) related to your specific model that might address this issue.

How can I prevent P0702 from happening again?

To prevent the P0702 code from reoccurring, maintain regular vehicle inspections, ensure proper wiring connections, and replace any worn out components in the transmission range sensor circuit. Regularly using diagnostic tools like the GeekOBD APP can help catch issues before they become significant problems.

What is P0702?

The P0702 diagnostic trouble code (DTC) is triggered when the Engine Control Module (ECM) detects a problem with the transmission range sensor circuit. This sensor plays a crucial role in ensuring that your vehicle's transmission is shifting properly. Essentially, the transmission range sensor tells the ECM the position of the gear selector, whether it's in park, reverse, or drive. If the sensor is malfunctioning or if its circuit has a fault, the ECM cannot accurately determine the gear position, leading to potential transmission issues. In many cases, this code can lead to rough shifting, unintended gear changes, or even prevent the car from starting. For example, a 2015 Ford F-150 might experience delayed shifts or erratic behavior while changing gears. Ignoring this code can lead to more severe transmission problems down the line, thus emphasizing the importance of addressing it promptly. The P0702 code is common in several vehicles, especially in Ford and Chevrolet models, often appearing alongside other transmission-related codes. Therefore, if you're seeing this code, it's advisable to investigate the issue further to prevent costly repairs in the future.

System: P - Powertrain (Engine, Transmission, Emissions)

Symptoms

Common symptoms when P0702 is present:

  • Check engine light stays on constantly, indicating a persistent issue that needs to be diagnosed.
  • Engine hesitates during acceleration, which can lead to unpredictable performance and safety concerns.
  • Fuel economy decreased by 10-15%, which can be financially burdensome and indicate underlying issues.
  • Erratic shifting behavior, where the vehicle may unexpectedly shift gears, causing a jerky ride.
  • Difficulty starting the vehicle, especially if the sensor fails to communicate the correct gear position.

Possible Causes

Most common causes of P0702 (ordered by frequency):

  1. Faulty transmission range sensor (60% likelihood) - This is the most common cause where the sensor fails to provide accurate readings to the ECM.
  2. Wiring issues (20%) - Damaged or corroded wires can disrupt the signal between the sensor and the ECM, leading to this code.
  3. Faulty ECM (10%) - A malfunctioning engine control module can misinterpret signals from the transmission range sensor.
  4. Mechanical transmission issues (5%) - Internal problems within the transmission can also trigger this code.
  5. Poor installation or maintenance practices (5%) - Neglected maintenance can lead to various sensor and wiring failures.

P0702 Repair Costs

Cost Breakdown by Repair Type

Transmission Range Sensor Replacement

Replacing the faulty transmission range sensor to restore proper function.

  • Total: $150 - $300
  • Success rate: 85%
Wiring Repair

Repairing damaged wiring or connections that affect sensor performance.

  • Total: $100 - $200
  • Success rate: 75%
ECM Replacement

In rare cases, replacing the ECM if it is determined to be faulty.

  • Total: $500 - $1,200
  • Success rate: 50%
Money-Saving Tips for P0702
  • 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 P0702 Diagnosis Process

Follow these systematic steps to accurately diagnose P0702. 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).

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 - 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).

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 - Use a multimeter or specific diagnostic tools to test the transmission range sensor and wiring (20-30 minutes)

Step 3: Component testing - Use a multimeter or specific diagnostic tools to test the transmission range sensor and wiring (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 - 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).

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 no reoccurrence of the code (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and no reoccurrence of the 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 in a 2015 Ford F-150

Vehicle: 2015 Ford F-150, 45,000 miles

Problem: Customer reported the check engine light was on and the vehicle experienced erratic shifting.

Diagnosis: After scanning with the GeekOBD APP, the P0702 code was confirmed. A visual inspection revealed a damaged transmission range sensor.

Solution: Replaced the faulty transmission range sensor and cleared the codes. Verified successful operation through a road test.

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

Result: The check engine light remained off, and the vehicle shifted smoothly.

Case Study 2: Wiring Repair on a 2014 Chevrolet Camaro

Vehicle: 2014 Chevrolet Camaro, 60,000 miles

Problem: Customer experienced difficulty starting the car and noticed the check engine light was illuminated.

Diagnosis: Diagnostic testing revealed a P0702 code. Further inspection uncovered damaged wiring leading to the transmission range sensor.

Solution: Repaired the damaged wiring and reconnected the sensor.

Cost: $180 (labor: $80, wiring harness: $100)

Result: The vehicle started without issue, and the check engine light stayed off.

Diagnose P0702

Use GeekOBD APP for professional diagnosis!

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  • Professional-grade analysis
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Code Information

Code: P0702
System: Powertrain (Engine, Transmission, Emissions)
Severity: HIGH
Category: Engine Codes