P0919 - Transmission Range Sensor Circuit Intermittent Malfunction in Chevrolet and GMC Models

Quick Answer

P0919 means: P0919 refers to an intermittent malfunction in the transmission range sensor circuit.

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

Can I drive with P0919? Immediate attention is recommended to prevent potential transmission damage.

Common Questions

What does P0919 mean and how does it affect my car?

The P0919 code indicates an intermittent malfunction in the transmission range sensor circuit, which is crucial for determining your vehicle's gear position. If this code appears, your car may struggle to shift gears, leading to poor performance and potential transmission damage if not addressed promptly.

What are the most common causes of P0919 and how much does it cost to fix?

Common causes of P0919 include a faulty transmission range sensor, wiring issues, and ECM malfunctions. The cost to fix the issue can range from $150 to $300 for sensor replacement and $100 to $200 for wiring repairs, depending on the severity of the problem.

Can I drive my car with P0919 or should I stop immediately?

While you may be able to drive your vehicle with P0919, it is not advisable. Continuing to drive could lead to further transmission damage, resulting in higher repair costs. It is best to seek immediate attention to avoid costly consequences.

How can I diagnose P0919 myself using GeekOBD APP?

To diagnose P0919 using the GeekOBD APP, start by scanning your vehicle to retrieve the DTCs. Review the freeze frame data to understand the conditions when the fault occurred. Perform visual inspections of the wiring and connections, and if necessary, conduct further tests on the transmission range sensor.

What vehicles are most commonly affected by P0919?

The P0919 code is frequently seen in Chevrolet and GMC models, particularly those manufactured from 2015 to 2018. Specific models may include the Chevrolet Silverado, GMC Sierra, and others. Check for any related recalls or technical service bulletins for your vehicle.

How can I prevent P0919 from happening again?

Preventing P0919 involves regular maintenance checks on your vehicle's transmission system, including inspecting wiring and connections for wear and corrosion. Additionally, keeping the transmission fluid at the correct level and condition can help ensure longevity.

What is P0919?

The diagnostic trouble code P0919 indicates a problem with the transmission range sensor circuit, specifically an intermittent malfunction. This sensor is crucial for determining the gear position of the vehicle's transmission, which directly affects the performance of the engine and transmission system. When the P0919 code appears, it typically means that the Engine Control Module (ECM) detected a discrepancy in the signals received from the transmission range sensor. This can lead to several issues, including the inability to shift gears properly, potential transmission failure, or even stalling in some cases. Car owners may notice that their vehicle struggles to shift or enters 'limp mode,' which is a protective feature that limits engine power to prevent further damage. This code is common in various Chevrolet and GMC models, particularly those manufactured between 2015 and 2018. Ignoring this code can lead to severe transmission damage and costly repairs down the line. Therefore, it's essential for vehicle owners to address it promptly by seeking a qualified mechanic who can diagnose and repair the underlying issue.

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

Symptoms

Common symptoms when P0919 is present:

  • Check engine light illuminates, indicating a fault in the transmission system.
  • Difficulty in shifting gears, which can lead to a jerking sensation during acceleration or deceleration.
  • Vehicle enters limp mode, restricting speed and engine power to protect the transmission.
  • Abnormal transmission behavior, such as slipping or harsh shifting.
  • Increased fuel consumption due to improper gear selection.

Possible Causes

Most common causes of P0919 (ordered by frequency):

  1. {'cause': 'Faulty transmission range sensor (60%) - The most common issue, where the sensor itself fails to send accurate signals.', 'description': 'A malfunctioning sensor can cause incorrect readings, leading to improper gear selection.'}
  2. {'cause': 'Wiring issues (25%) - Damaged or corroded wiring that connects the sensor to the ECM can disrupt communication.', 'description': 'Inspect wiring for signs of wear or corrosion, as this can lead to intermittent faults.'}
  3. {'cause': 'ECM malfunction (10%) - While less common, a faulty ECM can misinterpret signals from the transmission range sensor.', 'description': 'This may require reprogramming or replacement of the ECM.'}
  4. {'cause': 'Poor connections (3%) - Loose or corroded connectors can impact sensor performance.', 'description': 'Regular maintenance and clean connections can help prevent this issue.'}
  5. {'cause': 'Mechanical issues (2%) - Problems within the transmission itself can also lead to this code.', 'description': 'Such issues may require comprehensive diagnostic testing to identify.'}

P0919 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: 90%
Wiring Repair/Replacement

Fixing or replacing damaged wiring or connectors in the transmission range sensor circuit.

  • Total: $100 - $200
  • Success rate: 80%
Money-Saving Tips for P0919
  • 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 P0919 Diagnosis Process

Follow these systematic steps to accurately diagnose P0919. 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 related wiring (20-30 minutes)

Step 3: Component testing - Use a multimeter or specific diagnostic tools to test the transmission range sensor and related 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 (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success (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 2016 Chevrolet Silverado

Vehicle: 2016 Chevrolet Silverado, 65,000 miles

Problem: Customer reported difficulty shifting gears and check engine light illuminated.

Diagnosis: After scanning with GeekOBD APP, P0919 was found. Visual inspection revealed a damaged transmission range sensor.

Solution: Replaced the faulty transmission range sensor.

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

Result: Post-repair, the vehicle shifted smoothly, and the check engine light was resolved.

Case Study 2: Wiring Repair on 2017 GMC Sierra

Vehicle: 2017 GMC Sierra, 50,000 miles

Problem: Customer experienced erratic shifting and occasional stalling.

Diagnosis: Diagnostic tests indicated P0919 due to poor wiring connections. Further inspection revealed corrosion.

Solution: Repaired the wiring harness and cleaned the connectors.

Cost: $180 (parts: $80, labor: $100)

Result: The vehicle functioned normally post-repair, with no further issues.

Diagnose P0919

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: P0919
System: Powertrain (Engine, Transmission, Emissions)
Severity: HIGH
Category: Engine Codes