B0959 - Power Steering Control Module Fault in 2015-2019 Toyota Camry and Similar Models

Quick Answer

B0959 means: B0959 indicates a fault in the power steering control module, affecting steering performance.

Fix: Check and replace faulty components Cost: $300 - $600 Time: 90-180 minutes

Can I drive with B0959? Immediate attention is recommended to avoid safety risks while driving.

Common Questions

What does B0959 mean and how does it affect my car?

B0959 indicates a malfunction in the power steering control module. This can lead to heavy steering, making it difficult to control the vehicle. It's crucial to address this issue promptly to maintain safe driving conditions.

What are the most common causes of B0959 and how much does it cost to fix?

Common causes include a faulty power steering control module, poor wiring connections, and low fluid levels. Repair costs can range from $50 for fluid checks to $600 for module replacements, depending on the fix needed.

Can I drive my car with B0959 or should I stop immediately?

You should avoid driving the vehicle until the issue is resolved, as heavy steering can lead to accidents. Ignoring the code may result in further damage or loss of steering control.

How can I diagnose B0959 myself using GeekOBD APP?

You can use the GeekOBD APP to scan for DTCs and view live data from the power steering system. Pay attention to any abnormal readings or patterns that might indicate the specific issue. Follow up with visual inspections as needed.

What vehicles are most commonly affected by B0959?

Commonly affected vehicles include the 2015-2019 Toyota Camry, 2016-2018 Honda Accord, and other models that incorporate electronic power steering systems. Always check for recalls or service bulletins related to your specific vehicle.

How can I prevent B0959 from happening again?

Regular maintenance, including checks on power steering fluid levels and electrical connections, can help prevent this issue. Additionally, addressing any warning lights immediately can prevent further damage.

What is B0959?

DTC B0959 indicates a fault related to the power steering control module, commonly found in various vehicles including the 2015-2019 Toyota Camry and others. This diagnostic trouble code signifies that the power steering control module is unable to perform its functions properly, which can lead to a range of performance issues. When this code is triggered, it typically means there is a malfunction within the module itself or issues with the communication between the module and other vehicle systems. This can manifest as a loss of power steering assistance, making steering heavy and difficult, especially at low speeds. Drivers may notice that the steering feels stiff or unresponsive, which can be particularly concerning during tight maneuvers or parking. Ignoring this issue can lead to further damage to the steering system and potentially compromise vehicle safety. In some cases, associated warning lights may illuminate on the dashboard, alerting the driver to the problem. It is advisable to address this code promptly to ensure safe and reliable vehicle operation.

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

Symptoms

Common symptoms when B0959 is present:

  • Check engine light illuminates, indicating a potential issue with the power steering system.
  • Steering feels excessively heavy, especially at slow speeds, making it difficult to maneuver.
  • Intermittent loss of power steering assistance, causing erratic steering response.
  • Unusual noises when turning the steering wheel, possibly indicating mechanical issues.
  • Dashboard warning lights related to the steering system may appear, signaling the need for a check.

Possible Causes

Most common causes of B0959 (ordered by frequency):

  1. The most common cause is a faulty power steering control module, with a likelihood of around 70%. This may result from electrical failures or software malfunctions.
  2. A second frequent cause could be poor electrical connections or corroded wiring, which can disrupt communication between the control module and the vehicle's systems.
  3. A third potential cause involves low power steering fluid levels, which can lead to increased strain on the system; regular checks can prevent this.
  4. Less common but serious causes include a damaged steering rack, which may require extensive repairs to replace.
  5. A rare cause could be a malfunction in the vehicle's onboard computer, which may necessitate dealer-level diagnostics.

B0959 Repair Costs

Cost Breakdown by Repair Type

Power Steering Control Module Replacement

Complete replacement of the faulty power steering control module, including labor and parts.

  • Total: $300 - $600
  • Success rate: 85%
Electrical Connection Repair

Repair or replacement of corroded wiring or poor connections affecting the power steering module.

  • Total: $100 - $300
  • Success rate: 75%
Fluid Level Check and Refill

Checking and refilling power steering fluid to ensure proper operation.

  • Total: $50 - $100
  • Success rate: 90%
Money-Saving Tips for B0959
  • 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 B0959 Diagnosis Process

Follow these systematic steps to accurately diagnose B0959. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Begin with an initial visual inspection for any visible damage to the wiring harness or connections related to the power steering control module (5-10 minutes)

Step 1: Begin with an initial visual inspection for any visible damage to the wiring harness or connections related to the power steering control module (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: Use the GeekOBD APP to perform an OBD2 scan and retrieve all stored codes, alongside freeze frame data to understand the context of the fault (10-15 minutes)

Step 2: Use the GeekOBD APP to perform an OBD2 scan and retrieve all stored codes, alongside freeze frame data to understand the context of the fault (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: Conduct component testing with a multimeter to measure voltage and resistance in the power steering system components (20-30 minutes)

Step 3: Conduct component testing with a multimeter to measure voltage and resistance in the power steering system 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: After repairs, perform a system function test to verify the proper operation of the power steering system and clear any fault codes (10-15 minutes)

Step 4: After repairs, perform a system function test to verify the proper operation of the power steering system and clear any fault 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: Finally, take the vehicle for a road test under various conditions to ensure that steering functions correctly without any warning lights (15-20 minutes)

Step 5: Finally, take the vehicle for a road test under various conditions to ensure that steering functions correctly without any warning lights (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: Power Steering Module Replacement on 2017 Toyota Camry

Vehicle: 2017 Toyota Camry, 45,000 miles

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

Diagnosis: Diagnosed with DTC B0959 through OBD2 scan using GeekOBD APP, confirming module fault.

Solution: Replaced the power steering control module and performed a fluid flush.

Cost: $500 (including parts and labor)

Result: Steering returned to normal operation; no further issues reported.

Case Study 2: Electrical Connection Repair on 2016 Honda Accord

Vehicle: 2016 Honda Accord, 60,000 miles

Problem: Driver experienced intermittent heavy steering and dashboard warning lights.

Diagnosis: Identified corroded wiring connections during visual inspection and OBD2 scan revealed B0959.

Solution: Repaired wiring connections and cleared fault codes.

Cost: $150 (parts and labor)

Result: Steering performance improved; customer satisfied with the repair.

Diagnose B0959

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: B0959
System: Body (Airbags, Lighting, Security, Climate Control)
Severity: HIGH
Category: Body Codes