P0373 - Understanding DTC P0373: Common Issues in 2013-2018 Ford F-150 and Other Vehicles

Quick Answer

P0373 means: P0373 indicates a problem with the crankshaft position sensor signal.

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

Can I drive with P0373? Address this issue as soon as possible to avoid further engine damage.

Common Questions

What does P0373 mean and how does it affect my car?

P0373 indicates a problem with the crankshaft position sensor, which is crucial for your engine's timing. If this code appears, you might notice a drop in performance, including hesitations during acceleration and poor fuel efficiency. Ignoring this issue could lead to more severe engine problems down the line.

What are the most common causes of P0373 and how much does it cost to fix?

The primary cause of P0373 is a faulty crankshaft position sensor, which can cost between $150 and $300 to replace. Other causes include damaged wiring or a malfunctioning ECM, which can add to the repair costs. It's crucial to diagnose the specific issue to avoid unnecessary expenses.

Can I drive my car with P0373 or should I stop immediately?

While it may be possible to drive your vehicle short distances with code P0373, it is not advisable. Continuing to drive with this code can lead to further engine damage and may increase repair costs. It's best to address this issue promptly.

How can I diagnose P0373 myself using GeekOBD APP?

Using the GeekOBD APP, connect to your vehicle's OBD-II port. Run a full scan to check for DTCs. You can also access freeze frame data to understand the conditions under which P0373 was triggered, helping you identify the root cause.

What vehicles are most commonly affected by P0373?

DTC P0373 is commonly seen in 2013-2018 Ford F-150 models, but it can also affect various other vehicles from manufacturers like Chevrolet, GMC, and Dodge. It's essential to check for model-specific issues or recalls.

How can I prevent P0373 from happening again?

Regular vehicle maintenance is key to preventing DTC P0373. Ensure timely oil changes, check for wiring damage during routine inspections, and replace sensors as recommended in your owner's manual.

What is P0373?

DTC P0373 refers to a specific diagnostic trouble code that indicates issues with the timing reference high signal in vehicles equipped with an OBD-II system. This code typically means there is a problem with the crankshaft position sensor or its circuit. In practical terms, it suggests that the engine control module (ECM) is not receiving the correct timing signals from the crankshaft position sensor, which is vital for efficient engine operation. If this issue is not resolved, it may lead to poor engine performance, increased emissions, and in some cases, the vehicle may fail to start. Common symptoms associated with this code include the check engine light illuminating, engine misfires, or a decrease in fuel economy. If you own a 2013-2018 Ford F-150 or similar models, being aware of this code can help you understand potential issues before they escalate into more costly repairs.

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

Symptoms

Common symptoms when P0373 is present:

  • Check engine light stays on constantly, indicating a fault that needs attention.
  • Engine hesitates during acceleration, causing a noticeable lag while driving.
  • Fuel economy decreased by 10-15%, leading to increased fuel expenses.
  • Difficulty starting the engine, which may require multiple attempts to turn over.
  • Unusual engine noise, such as knocking or pinging, potentially leading to severe engine damage.

Possible Causes

Most common causes of P0373 (ordered by frequency):

  1. Faulty crankshaft position sensor (60% likelihood) - This is the most common cause of DTC P0373, where the sensor may fail due to wear or exposure to heat.
  2. Damaged wiring or loose connections (25% likelihood) - Corroded or frayed wires can interrupt the signal from the crankshaft sensor to the ECM.
  3. Faulty ECM (10% likelihood) - In rare cases, the engine control module itself may malfunction, leading to misinterpretation of sensor signals.
  4. Timing belt or chain issues (4% likelihood) - If the timing components are off, the sensor may not properly detect the crankshaft position.
  5. Infrequent but possible, an oil leak can affect the sensor's operation, causing erratic signals.

P0373 Repair Costs

Cost Breakdown by Repair Type

Crankshaft Position Sensor Replacement

Replacing the faulty crankshaft position sensor can resolve DTC P0373.

  • Total: $150 - $300
  • Success rate: 90%
Wiring Repair

Repairing damaged wiring or connections to ensure proper sensor function.

  • Total: $100 - $200
  • Success rate: 85%
Money-Saving Tips for P0373
  • 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 P0373 Diagnosis Process

Follow these systematic steps to accurately diagnose P0373. 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 to test the crankshaft position sensor's voltage and signal output (20-30 minutes)

Step 3: Component testing - Use a multimeter to test the crankshaft position sensor's voltage and signal output (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: Crankshaft Position Sensor Failure in 2015 Ford F-150

Vehicle: 2015 Ford F-150, 75,000 miles

Problem: Customer reported check engine light illumination and engine stalling at idle.

Diagnosis: Initial diagnostic revealed P0373 code. Visual inspection showed a frayed wiring harness connected to the crankshaft position sensor.

Solution: Replaced the crankshaft position sensor and repaired the damaged wiring.

Cost: $250 (sensor $150, wiring repair $100)

Result: Post-repair, the check engine light was cleared, and the engine ran smoothly with no further issues.

Case Study 2: Electrical Issue Leading to P0373 in 2017 Chevrolet Silverado

Vehicle: 2017 Chevrolet Silverado, 60,000 miles

Problem: Owner experienced poor acceleration and check engine light.

Diagnosis: OBD-II scan confirmed P0373. Further testing indicated a loose connector on the crankshaft position sensor.

Solution: Reattached the connector firmly and cleared the codes.

Cost: $80 (diagnosis and labor)

Result: The vehicle performed excellently after the repair, with no recurrence of the issue.

Diagnose P0373

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: P0373
System: Powertrain (Engine, Transmission, Emissions)
Severity: HIGH
Category: Engine Codes