Steering and suspension

B00F5 — Power Steering Control Module malfunction

Severity: high Drive with care, to a shop

What B00F5 means

B00F5 is a manufacturer-specific code set when the power steering control module (PSCM) detects an internal fault or a problem in its circuits. It is mostly seen on electric power steering (EPS), where the module uses torque sensor, steering angle and vehicle speed inputs to run the assist motor. When a fault is found, assist may be reduced or switched off. The exact definition varies by brand.

Symptoms

  • Heavy steering effort, especially at low speed
  • Intermittent or total loss of power assist
  • Steering warning light or general fault light on
  • Unusual noises when turning the wheel
  • Fault comes and goes after restarting the engine

Possible causes

  1. Failed PSCM
  2. Damaged wiring or corroded, loose connectors in the EPS circuits
  3. Low system voltage, weak battery or poor ground
  4. Faulty steering angle or torque sensor
  5. Software fault in the module requiring reflash or relearn

How to diagnose

  1. Scan all modules for codes and note the freeze frame data
  2. Test the battery and charging system; voltage should be stable with the engine running
  3. Check EPS fuses and relays
  4. Inspect connectors and harness at the module, steering rack or column for corrosion, chafing and moisture
  5. Test power and ground at the module with a multimeter
  6. Watch steering angle and torque sensor data on a scan tool while turning the wheel
  7. Check for software updates for the module from the manufacturer
  8. Clear the code and see whether it returns

Common fixes

  • Repair or replace damaged wiring and connectors
  • Charge or replace the battery and fix any charging problem
  • Replace a faulty angle or torque sensor and calibrate it
  • Reflash or replace the PSCM and code it to the vehicle

Questions and answers

Can I drive with code B00F5?

Only carefully and for a short distance. Power assist may cut out at any time, making the steering much heavier. Get it diagnosed promptly.

What does B00F5 mean?

It points to a fault in the power steering control module or its circuits. The cause can be the module itself, wiring, power supply or sensors, so it needs diagnosis.

Can I just clear the code?

Clearing may turn the light off for a while, but if the cause remains the code will return. Check power, ground and connectors first.

This is general information about the code. The meaning can differ between makes and models: a scan tool and the repair manual for your car will show the exact cause.