U0197 - Communication Error with the Fuel Pump Control Module in Various Vehicles

Quick Answer

U0197 means: U0197 indicates a communication failure between the ECM and the fuel pump control module.

Fix: Check and replace faulty components Cost: $200 - $600 Time: 90-180 minutes

Can I drive with U0197? Immediate attention is recommended to prevent potential engine failure.

Common Questions

What does U0197 mean and how does it affect my car?

The U0197 code means there's a communication issue between your vehicle's engine control module and the fuel pump control module. This can lead to difficulties in starting the engine, erratic power delivery, or even complete engine failure if not addressed. Long-term neglect of this issue could lead to increased repair costs and safety risks.

What are the most common causes of U0197 and how much does it cost to fix?

Common causes include a faulty fuel pump control module, damaged wiring, or issues with the ECM. Repair costs can range from $100 for simple wiring repairs to $1200 for ECM replacement. It's essential to diagnose the specific issue to get an accurate estimate.

Can I drive my car with U0197 or should I stop immediately?

Driving with a U0197 code is not advised as it can lead to engine stalling or failure. If you experience symptoms like difficulty starting or power loss, it's best to stop driving and have your vehicle inspected to prevent further damage.

How can I diagnose U0197 myself using GeekOBD APP?

Using the GeekOBD APP, you can perform an OBD2 scan to retrieve the U0197 code and any related codes. The app provides freeze frame data to help you understand when the fault occurred, allowing you to perform further tests on the fuel pump and wiring.

What vehicles are most commonly affected by U0197?

Commonly affected vehicles include the 2013-2018 Chevrolet Malibu and the 2014-2017 Chevrolet Traverse. However, other GM models may also experience this issue, especially if they share similar fuel control systems.

How can I prevent U0197 from happening again?

Regular maintenance checks, including inspections of the fuel pump and wiring, can help prevent U0197. Additionally, keeping the vehicle's software updated through dealership services may minimize communication issues.

What is U0197?

The diagnostic trouble code U0197 indicates a communication error between the engine control module (ECM) and the fuel pump control module (FPCM). This issue can arise in several makes and models, particularly in vehicles like the 2013-2018 Chevrolet Malibu and 2014-2017 Chevrolet Traverse. When the ECM cannot communicate with the FPCM, it may not be able to properly manage fuel delivery to the engine, leading to performance issues or even engine stalling. In essence, this code suggests that the ECM is unable to receive or send data regarding the fuel pump operation, which can affect overall vehicle performance. In real-world terms, when faced with a U0197 code, you may notice symptoms like difficulty starting the vehicle, reduced engine power, or a check engine light illuminating. Ignoring this code can lead to more severe issues, including engine failure or stalling while driving, which poses safety risks to the driver and passengers. Addressing this code quickly is crucial to ensure optimal vehicle operation and reliability.

System: U - Network (Communication, CAN Bus)

Symptoms

Common symptoms when U0197 is present:

  • Check engine light stays on constantly, indicating an underlying issue that needs attention.
  • Difficulty starting the engine, which may require multiple attempts to get the vehicle going.
  • Engine power loss during acceleration, making it challenging to merge onto highways or overtake other vehicles safely.
  • Fuel economy may decrease significantly, with reports of a 10-15% drop in efficiency.
  • Unusual noises from the fuel pump area, such as humming or clicking sounds that were not present before.

Possible Causes

Most common causes of U0197 (ordered by frequency):

  1. The most common cause is a faulty fuel pump control module, which has a 60-70% chance of being the issue. This module can fail due to electrical issues or wear over time.
  2. Another possible cause is damaged wiring or connectors between the ECM and FPCM. Corrosion or shorts can disrupt communication, accounting for about 20% of cases.
  3. A blown fuse in the electrical circuit related to the fuel pump can also cause this code. Regular checks of fuses can help prevent this issue.
  4. Less common but serious causes include a malfunctioning ECM itself, which may require replacement or reprogramming.
  5. A rare cause could be software glitches in the vehicle's onboard systems, often resolved through software updates from the manufacturer.

U0197 Repair Costs

Cost Breakdown by Repair Type

Fuel Pump Control Module Replacement

Replacing the faulty fuel pump control module to restore communication.

  • Total: $200 - $600
  • Success rate: 85%
Wiring Repair

Repairing or replacing damaged wiring and connectors in the communication circuit.

  • Total: $100 - $300
  • Success rate: 75%
ECM Reprogramming or Replacement

If the ECM is determined to be faulty, it may need to be reprogrammed or replaced.

  • Total: $500 - $1200
  • Success rate: 90%
Money-Saving Tips for U0197
  • 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 U0197 Diagnosis Process

Follow these systematic steps to accurately diagnose U0197. 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, including the fuel pump and related wiring (20-30 minutes)

Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components, including the fuel pump 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 and ensure no codes return (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure no codes return (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: Fuel Pump Control Module Replacement - 2015 Chevrolet Malibu

Vehicle: 2015 Chevrolet Malibu, 80,000 miles

Problem: Customer reported check engine light and difficulty starting the vehicle.

Diagnosis: OBD2 scan revealed U0197. Visual inspection showed corroded connectors at the fuel pump module.

Solution: Replaced the fuel pump control module and cleaned connectors.

Cost: $450 (parts: $250, labor: $200)

Result: Vehicle started reliably, check engine light cleared, and no further issues reported.

Case Study 2: Wiring Repair - 2016 Chevrolet Traverse

Vehicle: 2016 Chevrolet Traverse, 65,000 miles

Problem: Customer experienced engine stalling and check engine light.

Diagnosis: U0197 was confirmed, and inspection revealed damaged wiring harness.

Solution: Repaired the damaged wiring and ensured secure connections.

Cost: $150 (parts: $50, labor: $100)

Result: Vehicle functioned correctly post-repair, with no recurrence of the code.

Diagnose U0197

Use GeekOBD APP for professional diagnosis!

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Code Information

Code: U0197
System: Network (Communication, CAN Bus)
Severity: HIGH
Category: Network Codes