B0732 - Transmission Range Sensor Circuit Low Input (Common in 2005-2010 Ford Fusion, 2007-2011 Chevrolet Malibu)

Quick Answer

B0732 means: B0732 indicates a low input signal from the transmission range sensor, affecting gear shifting.

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

Can I drive with B0732? Immediate attention is required to avoid transmission issues.

Common Questions

What does B0732 mean and how does it affect my car?

The B0732 code indicates that your vehicle's transmission range sensor is sending a low input signal to the engine control module. This can lead to issues such as erratic shifting or starting problems. If left unaddressed, it could affect your vehicle's reliability and safety.

What are the most common causes of B0732 and how much does it cost to fix?

Common causes include a faulty transmission range sensor, wiring issues, or even a malfunctioning ECM. Repair costs can range from $150 for sensor replacement to $1,200 for ECM replacement, depending on the issue.

Can I drive my car with B0732 or should I stop immediately?

While you may be able to drive your car with the B0732 code, it's not advisable due to the risk of unexpected behavior such as stalling or shifting problems. It's best to address the issue promptly.

How can I diagnose B0732 myself using GeekOBD APP?

To diagnose B0732 with GeekOBD APP, connect the app to your vehicle's OBD2 port and retrieve the diagnostic codes. Follow the prompts to view freeze frame data, which will help you understand the conditions under which the code was triggered.

What vehicles are most commonly affected by B0732?

Vehicles commonly affected by the B0732 code include the 2005-2010 Ford Fusion and the 2007-2011 Chevrolet Malibu, among others.

How can I prevent B0732 from happening again?

Regular maintenance, including checking and replacing the transmission fluid, inspecting wiring connections, and ensuring proper sensor function, can help prevent the recurrence of B0732.

What is B0732?

The diagnostic trouble code (DTC) B0732 indicates a malfunction in the transmission range sensor circuit, specifically identifying a low input signal from the sensor. The transmission range sensor, also known as the neutral safety switch, is responsible for communicating the position of the gear selector to the vehicle's engine control module (ECM). When this code appears, it often signifies that the ECM is not receiving the correct voltage or signal from the transmission range sensor. As a result, the vehicle may experience issues such as difficulty starting, erratic shifting, or the inability to shift into certain gears. In real-world terms, this can severely affect the drivability of your vehicle, leading to unsafe conditions, especially if the car inadvertently shifts into neutral or park while driving. This issue is particularly common in certain makes and models, including the Ford Fusion and Chevrolet Malibu manufactured between 2005 and 2011. If you encounter this code, addressing it promptly is crucial to maintain safe operation and prevent further damage to the transmission system.

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

Symptoms

Common symptoms when B0732 is present:

  • Check engine light stays on constantly, indicating an underlying issue with the transmission system.
  • Vehicle may hesitate or stall during acceleration, leading to unpredictable driving experiences.
  • Unusual shifting behavior, such as the transmission slipping or failing to shift into the correct gear.
  • Difficulty starting the engine, particularly in situations where the gear selector is in 'Park' or 'Neutral.'
  • Reduced fuel efficiency, potentially leading to a noticeable drop in miles per gallon (MPG).

Possible Causes

Most common causes of B0732 (ordered by frequency):

  1. {'cause': 'Faulty transmission range sensor - 60% likelihood. This component can wear out over time due to electrical and mechanical stress.', 'details': 'A failing sensor may not send the correct position signals to the ECM, leading to improper gear engagement.'}
  2. {'cause': 'Wiring issues - 25% likelihood. Damaged or corroded wiring can disrupt the signal between the transmission range sensor and the ECM.', 'details': 'Visual inspections can help identify frayed wires or loose connections that may be causing the issue.'}
  3. {'cause': 'Faulty ECM - 10% likelihood. In rare cases, the engine control unit itself may malfunction and misinterpret the signals.', 'details': 'This would require advanced diagnostics and possibly replacing the ECM.'}
  4. {'cause': "Software glitches - 3% likelihood. Occasionally, software errors can cause miscommunication within the vehicle's systems.", 'details': 'Updating the software may resolve the issue without needing hardware replacements.'}
  5. {'cause': 'Mechanical issues in the transmission - 2% likelihood. Problems such as low transmission fluid or internal wear can also lead to symptoms.', 'details': 'Regular maintenance and fluid checks can help prevent these issues.'}

B0732 Repair Costs

Cost Breakdown by Repair Type

Transmission Range Sensor Replacement

Replacing the faulty transmission range sensor is often required to resolve the B0732 code.

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

Repairing any damaged wiring or connectors associated with the sensor can also resolve the issue.

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

In rare cases, replacing the ECM may be necessary if it is not interpreting the signals correctly.

  • Total: $500 - $1,200
  • Success rate: 50%
Money-Saving Tips for B0732
  • 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 B0732 Diagnosis Process

Follow these systematic steps to accurately diagnose B0732. 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 circuitry (20-30 minutes)

Step 3: Component testing - Use a multimeter or specific diagnostic tools to test the transmission range sensor and related circuitry (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 to confirm resolution (10-15 minutes)

Step 4: System function test - Verify proper operation after repairs and clear codes to confirm resolution (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 vehicle under various conditions to ensure the repair was successful (15-20 minutes)

Step 5: Road test verification - Drive vehicle under various conditions to ensure the repair was successful (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 a 2008 Ford Fusion

Vehicle: 2008 Ford Fusion, 120,000 miles

Problem: Customer reported intermittent shifting issues and check engine light.

Diagnosis: Scanned for codes and found B0732. Inspected the sensor and wiring, confirming a faulty transmission range sensor.

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

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

Result: Customer reported improved shifting performance and no recurrence of the check engine light.

Case Study 2: Wiring Repair on a 2007 Chevrolet Malibu

Vehicle: 2007 Chevrolet Malibu, 95,000 miles

Problem: Customer experienced starting issues and check engine light on.

Diagnosis: B0732 was present. Found corrosion in the wiring harness connected to the transmission range sensor.

Solution: Repaired the damaged wiring and connectors.

Cost: $150 (labor $100, wiring repair $50)

Result: Vehicle started reliably after repair, and the check engine light remained off.

Diagnose B0732

Use GeekOBD APP for professional diagnosis!

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  • Step-by-step repair guidance
  • Professional-grade analysis
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Code Information

Code: B0732
System: Body (Airbags, Lighting, Security, Climate Control)
Severity: HIGH
Category: Body Codes