Quick Answer
P0935 means: P0935 indicates a problem with the power steering pressure sensor circuit.
Can I drive with P0935? Immediate attention is recommended to ensure safe vehicle operation.
Common Questions
What does P0935 mean and how does it affect my car?
P0935 indicates an issue with the power steering pressure sensor circuit. This can lead to hard steering or erratic steering assist, making driving difficult and unsafe. If left unresolved, it can cause further damage to the power steering system.
What are the most common causes of P0935 and how much does it cost to fix?
Common causes include a faulty power steering pressure sensor, wiring issues, or low fluid levels. Repair costs can range from $150 to $300, depending on the specific issue.
Can I drive my car with P0935 or should I stop immediately?
It's best to avoid driving the vehicle until the issue is resolved. Steering problems can lead to loss of control, which poses safety risks.
How can I diagnose P0935 myself using GeekOBD APP?
Using the GeekOBD APP, perform a full OBD2 scan to retrieve codes and freeze frame data. Check the power steering pressure sensor readings and inspect for any wiring issues.
What vehicles are most commonly affected by P0935?
P0935 is frequently found in vehicles like the 2010-2015 Ford Fusion and the 2007-2013 Chevrolet Malibu, among others. Always check for any recalls or technical service bulletins related to power steering issues.
How can I prevent P0935 from happening again?
Regular maintenance checks of your power steering fluid and system can help. Ensure fluid levels are adequate and look for signs of leaks or wear in the power steering components.
What is P0935?
The P0935 diagnostic trouble code indicates a problem with the power steering pressure sensor circuit, specifically related to its range or performance. This sensor is crucial for monitoring the hydraulic pressure in the power steering system, helping to ensure smooth steering and responsive handling. When the power steering system is functioning correctly, the sensor sends voltage signals to the Engine Control Module (ECM), which adjusts the power assist based on driving conditions. If the sensor detects a pressure reading that is out of the expected range, it triggers the P0935 code. This can lead to either a loss of power steering assist or excessive power assist, making the vehicle difficult or unsafe to drive. Common symptoms include difficulty steering, a warning light on the dashboard, or unusual noises coming from the steering system. It's essential to address this issue promptly, as ignoring it can lead to more severe steering problems and potentially costly repairs. Regular maintenance and periodic checks of the power steering fluid level and condition can help prevent issues related to this sensor and its circuit.
System: P - Powertrain (Engine, Transmission, Emissions)
Symptoms
Common symptoms when P0935 is present:
- Check engine light stays on constantly, indicating a potential issue with the power steering system.
- Steering feels heavier than usual, especially at lower speeds, making it difficult to maneuver.
- Unusual noises when turning the steering wheel, such as whining or groaning, which may indicate a problem with the power steering pump or fluid.
- Fluid leaks under the vehicle, which might suggest a failing power steering system.
- Inconsistent steering response, where the steering assist varies unexpectedly, leading to a lack of control.
Possible Causes
Most common causes of P0935 (ordered by frequency):
- Faulty power steering pressure sensor (60% likelihood), resulting in incorrect pressure readings that trigger the P0935 code.
- Wiring issues such as frayed or damaged wires in the power steering pressure sensor circuit (25% likelihood), which can disrupt the signal to the ECM.
- Low power steering fluid levels or contaminated fluid (10% likelihood), which can affect the operation of the power steering system.
- Failed power steering pump (4% likelihood), which can lead to inadequate pressure readings and trigger the code.
- Corroded connectors or poor electrical connections (1% likelihood), which can lead to intermittent issues and false readings.
P0935 Repair Costs
Cost Breakdown by Repair Type
Power Steering Pressure Sensor Replacement
Replacing the faulty power steering pressure sensor with a new OEM part.
- Total: $150 - $300
- Success rate: 90%
Wiring Repair
Repairing damaged wiring or connectors in the power steering sensor circuit.
- Total: $100 - $200
- Success rate: 80%
Money-Saving Tips for P0935
- 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 P0935 Diagnosis Process
Follow these systematic steps to accurately diagnose P0935. 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).
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).
Step 3: Step 3: Component testing - Use a multimeter to test the voltage output of the power steering pressure sensor (20-30 minutes)
Step 3: Component testing - Use a multimeter to test the voltage output of the power steering pressure sensor (20-30 minutes).
Step 4: Step 4: System function test - Verify proper operation of the power steering system after repairs and clear codes (10-15 minutes)
Step 4: System function test - Verify proper operation of the power steering system after repairs and clear codes (10-15 minutes).
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure proper steering response (15-20 minutes)
Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure proper steering response (15-20 minutes).
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 Pressure Sensor Replacement in 2013 Ford Fusion
Vehicle: 2013 Ford Fusion, 85,000 miles
Problem: Customer reported difficulty steering and illuminated check engine light.
Diagnosis: After running a diagnostic scan, P0935 was retrieved. The pressure sensor was found to be faulty.
Solution: Replaced the power steering pressure sensor with an OEM part.
Cost: $220 (sensor $150, labor $70)
Result: Steering performance returned to normal, and the check engine light was cleared.
Case Study 2: Wiring Repair for 2011 Chevrolet Malibu
Vehicle: 2011 Chevrolet Malibu, 76,000 miles
Problem: Owner experienced erratic steering assist and a P0935 code.
Diagnosis: Inspection revealed damaged wiring in the power steering sensor circuit.
Solution: Repaired the damaged wiring and ensured all connections were secure.
Cost: $180 (labor $80, parts $100)
Result: Issue resolved, with smooth steering response and no further codes.