What it means
Brake pressure sensor E signal voltage below expected range. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
At a glance
- Usually lights the ABS or stability-control warning light
- The engine or gearbox may go into limp mode
How it works
Brake pressure sensor E sends a signal to the brake control module about hydraulic pressure. C059F sets when that signal falls below the expected electrical range, which can happen if the signal wire is grounded, the connector has poor contact, or the harness is damaged.
Common causes
Most likely first.
- Signal wire shorted to ground
- Connector pins corroded - high contact resistance
- Harness chafing through insulation
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
How to diagnose it
- Read ABS codes, freeze-frame data, and live sensor E data to confirm the low-signal fault and note whether it changes with brake application.
- Inspect sensor E's connector and nearby harness for water, corrosion, pushed-back pins, or chafing that could pull the signal low.
- With the code active, gently move the sensor E harness while watching live data to identify an intermittent short or poor connection.
- Using the wiring diagram, test the sensor E signal circuit for a short to ground and check connector contact and continuity as specified by the manufacturer.
- If the wiring and connector pass, check the sensor supply and ground, then evaluate sensor E and the brake module using the manufacturer's procedure.
Common fixes
- Clean and secure corroded or loose sensor E connector terminals, replacing damaged terminals or seals.
- Repair chafed wiring in the sensor E signal circuit.
- Repair a signal wire shorted to ground.
- Replace sensor E or repair the brake module only if circuit tests identify it as faulty.
Can I keep driving?
ABS and stability control may be disabled, and brake assist may be reduced; ordinary braking can still feel normal while emergency assistance is unavailable. Keep speed low, leave extra stopping distance, avoid slippery conditions, and stop if braking performance changes.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.