U037D - Communication Issue with Steering Control Module in Various Vehicles

Quick Answer

U037D means: U037D indicates a communication failure between the Engine Control Module and the Steering Control Module.

Fix: Check and replace faulty components Cost: $400 - $800 Time: 90-180 minutes

Can I drive with U037D? Immediate attention is recommended to ensure safe vehicle operation.

Common Questions

What does U037D mean and how does it affect my car?

U037D indicates there is a communication failure between the Engine Control Module and the Steering Control Module, which can lead to heavy or unresponsive steering. If not addressed, this could impact the safety and drivability of your vehicle.

What are the most common causes of U037D and how much does it cost to fix?

The most common causes include a faulty Steering Control Module, wiring issues, and software glitches. Repair costs can vary, but replacing the module might range from $400 to $800, while wiring repairs generally cost between $150 to $300.

Can I drive my car with U037D or should I stop immediately?

It's advisable to stop driving the vehicle if you see this code, as it can affect steering performance and safety. Have it diagnosed and repaired as soon as possible.

How can I diagnose U037D myself using GeekOBD APP?

Using the GeekOBD APP, you can perform an OBD2 scan to retrieve the U037D code and any related codes. It will also allow you to view freeze frame data that shows the conditions when the code was stored, helping you understand the issue better.

What vehicles are most commonly affected by U037D?

Vehicles like the 2015-2019 Ford F-150 and 2016-2018 Chevrolet Malibu frequently experience U037D due to their electronic steering systems. Always check for any recalls or Technical Service Bulletins (TSBs) related to this issue.

How can I prevent U037D from happening again?

Regular vehicle maintenance, including software updates and inspections of electrical components, can help prevent issues related to U037D from occurring in the future.

What is U037D?

The diagnostic trouble code (DTC) U037D indicates a communication issue between the vehicle's Engine Control Module (ECM) and the Steering Control Module (SCM). This code is often triggered when the SCM does not respond properly to messages sent by the ECM. In practical terms, this can lead to various performance issues in the vehicle, particularly concerning steering and handling. The condition is commonly found in vehicles like the 2015-2019 Ford F-150 and 2016-2018 Chevrolet Malibu, where the integration of electronic steering assists is prevalent. When this code is set, it can result in the steering wheel feeling heavy or unresponsive, as the system relies on accurate data exchange for optimal functioning. Over time, ignoring this code may lead to further complications, such as safety concerns while driving, particularly during sharp turns or emergency maneuvers. If you experience this code, addressing it promptly is essential to maintain the vehicle's drivability and safety.

System: U - Network (Communication, CAN Bus)

Symptoms

Common symptoms when U037D is present:

  • The check engine light illuminates and remains on, indicating a fault that needs attention.
  • Steering responsiveness may decrease, leading to a feeling of heaviness or delayed response when turning the wheel.
  • Drivers may notice erratic steering behavior, such as unexpected resistance or a feeling that the steering is not aligned properly.
  • In some cases, there may be intermittent warnings on the dashboard regarding the power steering system.
  • Fuel efficiency may decrease, as the vehicle's systems are not operating at optimal levels.

Possible Causes

Most common causes of U037D (ordered by frequency):

  1. {'cause': 'Faulty Steering Control Module (40%) - The SCM may fail or begin to malfunction, leading to communication issues.', 'details': 'This is the most common cause and can occur due to wear over time or electrical issues.'}
  2. {'cause': 'Wiring Issues (30%) - Damaged or corroded wiring between the ECM and SCM can prevent proper communication.', 'details': 'Inspect wiring harnesses for fraying, cuts, or corrosion, which can lead to signal loss.'}
  3. {'cause': 'Software Glitches (15%) - Sometimes, a software update or reprogramming of the ECM is necessary to resolve the communication error.', 'details': 'Keeping vehicle software up to date can prevent these issues from arising.'}
  4. {'cause': 'Power Supply Problems (10%) - Insufficient power supply to either module can cause malfunctions.', 'details': 'Check fuses and battery connections to ensure all components are receiving adequate power.'}
  5. {'cause': 'Rare Component Failures (5%) - Other components in the electronic steering system may fail, leading to this code.', 'details': 'While less common, issues in related modules can also affect communication.'}

U037D Repair Costs

Cost Breakdown by Repair Type

Steering Control Module Replacement

Replacing the faulty Steering Control Module with a new or refurbished unit.

  • Total: $400 - $800
  • Success rate: 90%
Wiring Repair/Replacement

Repairing damaged wiring or replacing corroded connectors to restore communication.

  • Total: $150 - $300
  • Success rate: 80%
Software Update/Reprogramming

Performing a software update or reprogramming of the ECM to resolve communication issues.

  • Total: $100 - $200
  • Success rate: 75%
Money-Saving Tips for U037D
  • 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 U037D Diagnosis Process

Follow these systematic steps to accurately diagnose U037D. 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 suspected components (20-30 minutes)

Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components (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 (10-15 minutes)

Step 4: System function test - Verify proper operation after repairs and clear codes (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 confirm repair success (15-20 minutes)

Step 5: Road test verification - Drive 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: Steering Control Module Replacement on 2017 Ford F-150

Vehicle: 2017 Ford F-150, 65,000 miles

Problem: Customer reported heavy steering and check engine light on.

Diagnosis: After scanning with GeekOBD APP, U037D was identified. Inspection revealed the Steering Control Module was faulty.

Solution: Replaced the Steering Control Module and cleared the codes.

Cost: $600 (parts: $500, labor: $100)

Result: Steering responsiveness returned to normal, and no further codes appeared.

Case Study 2: Wiring Repair for 2018 Chevrolet Malibu

Vehicle: 2018 Chevrolet Malibu, 45,000 miles

Problem: Customer experienced intermittent steering issues and dashboard warnings.

Diagnosis: Diagnostic scan revealed U037D. Visual inspection showed corroded wiring in the harness.

Solution: Repaired the damaged wiring and cleaned the connectors.

Cost: $250 (parts: $50, labor: $200)

Result: All symptoms resolved, and the customer reported improved steering performance.

Diagnose U037D

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: U037D
System: Network (Communication, CAN Bus)
Severity: HIGH
Category: Network Codes