C1057 — Rear-Right ABS Solenoid Short to Positive Supply

C1057 — Rear-Right ABS Solenoid Short to Positive Supply. The normal base braking function may still work, but C1057 can disable or disturb ABS pressure control.

For Ford vehicles

rear right ABS solenoid valve – short to positive supply

vehicle

Is it safe to drive?

ABS operation impaired; drive cautiously The normal base braking function may still work, but C1057 can disable or disturb ABS pressure control. Avoid high-speed driving and slippery conditions until the fault is repaired. If the pedal becomes soft, pulls, pulses heavily, or the brake warning lamp illuminates, stop safely and arrange immediate service.

Typical symptoms

The ABS warning lamp remains illuminated after the dashboard self-check.
The rear-right ABS solenoid may fail to meter brake pressure correctly.
ABS, traction control, or electronic stability control may be unavailable, depending on vehicle equipment.
The brake pedal may chatter, pulse, or grab during a firm stop when ABS attempts to intervene.
C1057 may remain stored or return immediately after the ignition is turned on.
Ordinary stopping can appear normal until a low-traction or emergency-braking event occurs.

Common causes

The rear-right ABS solenoid wiring harness is chafed or pinched against metal and shorted to a positive supply circuit.
Corrosion, damaged insulation, or a bent terminal in the rear-right ABS solenoid connector is allowing the positive-side pin to short.
The rear-right ABS solenoid winding has internal insulation failure, causing the coil to short to the positive supply.
Moisture or contamination inside the ABS hydraulic modulator has damaged the rear-right solenoid coil.
An internal driver failure in the ABS control module is intermittently shorting the rear-right solenoid circuit to positive supply.

How to diagnose with an OBD scanner

Confirm C1057 with a scan tool Connect AIScanAuto or a compatible ELM327 adapter, then read stored, pending, and manufacturer-specific ABS trouble codes. Confirm that C1057 is associated with the rear-right ABS solenoid and record any freeze-frame information before clearing it. A basic ELM327 reader may show the code but may not provide ABS live data or bidirectional tests.
Inspect the solenoid connector and harness Disconnect the battery negative cable before working on the harness. Examine the rear-right ABS solenoid connector for green corrosion, pushed-back pins, water intrusion, heat damage, and broken locking tabs. Follow the wiring along its entire route and look for chafing, crushing, or contact with sharp metal edges.
Isolate the short electrically Use the manufacturer wiring diagram and a digital multimeter to separate the wiring-harness fault from an internal coil fault. With the solenoid disconnected, compare its resistance with the service specification and check for continuity from the positive-supply pin to ground or the solenoid case. Unexpected continuity supports an internal short rather than simple high resistance.
Check the ABS module side of the circuit If the wiring and solenoid pass the specified checks, inspect the ABS control-module connector for damaged terminals and test the module driver according to the service procedure. Do not replace the module solely because C1057 is present; the short must first be isolated to the harness, connector, solenoid, or module driver.
Repair, bleed, and verify the repair Repair the damaged wiring or connector, or replace the faulty rear-right ABS solenoid or hydraulic modulator as testing indicates. Bleed the ABS hydraulic system if required by the manufacturer. Reconnect the scanner, clear C1057, confirm that it does not return, and perform a controlled road test while monitoring ABS operation and brake behavior.

Approximate repair cost

A rough independent-shop estimate is USD 250-1,200 for diagnosis and repair of the rear-right ABS solenoid circuit, depending on whether the fault is in the wiring, connector, solenoid or modulator, or ABS module. Hydraulic bleeding and module programming may add cost. Figures are estimates only, vary by region and vehicle, and are not verified repair quotes.

Common questions

What does C1057 specifically identify?

C1057 identifies an electrical short to positive supply involving the rear-right ABS solenoid valve, its wiring, connector, or the ABS module driver controlling that circuit.

Can the vehicle be driven with C1057 stored?

The vehicle can usually be driven cautiously because the base brake circuit may remain functional, but ABS and related traction or stability functions may be impaired until the fault is corrected.

Is a wiring problem more likely than a failed ABS module?

A damaged or chafed rear-right harness and a contaminated connector are common starting points. The module should be tested only after the wiring and solenoid have been isolated and shown to be free of shorts.

Will clearing C1057 permanently fix the problem?

No. Clearing the code only resets the ABS controller; C1057 will return if the short to positive supply remains in the solenoid, wiring, connector, or module.

C1057 — C1057 — Manufacturer Controlled DTC: Causes, Symptoms & Fix

When your vehicle's diagnostic system flags C1057, it means the powertrain computer has detected a signal irregularity within a circuit that falls under manufacturer-specific programming. C1057 is not a generic sensor failure — it points to a system where the expected electrical behavior (voltage, resistance, or communication pattern) does not match what the control module is receiving. Because the fault lives in a manufacturer-controlled area, the exact meaning can shift between brands and models, but the underlying issue is the same: something in the monitored circuit is not behaving as designed.

The control module watches this circuit constantly, sampling data while you drive. When readings drift outside the acceptable window for enough consecutive drive cycles, the ECU logs C1057 and illuminates the check engine light. The freeze frame snapshot captured alongside the code is particularly valuable — it records engine speed, load, temperature, and vehicle speed at the exact moment the malfunction occurred. That snapshot gives you the specific conditions you need to reproduce during testing, which is essential for tracking down intermittent problems.

Common Symptoms of C1057

The malfunction indicator lamp (MIL) is illuminated on the dashboard.
The system tied to the fault operates intermittently or stops working entirely.
Depending on which subsystem is involved, you may notice reduced performance or a limp-home mode that limits engine power.
Fuel consumption sometimes climbs compared to normal.
In some cases the engine may stall or fail to start.
If the affected circuit involves safety-critical components like brakes or steering, corresponding warning lights will appear alongside the check engine lamp.

What Causes C1057?

Corroded, loose, or damaged connector — This is the most frequent culprit. Moisture, age, and vibration degrade electrical contacts over time.
Faulty sensor or actuator — The actual component monitoring or performing the function has failed internally.
Broken or chafed wiring — Wires inside the harness can fracture from flexing, heat, or contact with sharp edges.
Blown fuse feeding the circuit — An overcurrent event opens the fuse, cutting power to the affected system.
Poor ground connection — Without a solid reference ground, the circuit behaves erratically.
Control module driver fault — The onboard computer itself may have an internal output stage failure.
Software calibration gap — In rare cases, a factory programming error causes the module to misinterpret valid signals.

How to Diagnose C1057

Connect an OBD2 scanner and confirm C1057 is stored in the ECU. Save the freeze frame data immediately — it documents the driving conditions when the fault triggered.
Look for related diagnostic trouble codes. Secondary codes often point directly to the failing component rather than the symptom. While you are at it, check for any manufacturer technical service bulletins that apply to your vehicle — some C0xxx codes have published factory fixes or software updates.
Perform a hands-on inspection of the wiring harness and all connectors tied to the fault. Look for cracked insulation, greenish corrosion buildup, bent pins, or any signs the connector seal has been compromised.
Use a multimeter to verify reference voltage, ground integrity, and signal continuity at the component harness. Compare your readings to the specifications in the service manual.
Conduct a wiggle test while monitoring live data. Gently move the wiring harness and connectors while watching the signal — any dropouts or wild fluctuations indicate a broken wire or loose terminal.
Clear the code, then drive the vehicle through a complete drive cycle that recreates the freeze frame conditions (same speed, load, and temperature). If C1057 returns, you have confirmed an active fault.

Repair Options and Costs

The right fix depends entirely on which part of the circuit failed:

Wiring repair or connector replacement — $80–$250
Sensor or actuator replacement — $150–$500
Control module repair or replacement — $300–$1,000

Most of the time, the problem is straightforward — a bad connector or a failed sensor. Tackle the inexpensive possibilities first before committing to an expensive module replacement. The total bill for C1057 typically lands somewhere between $80 and $1,000, with the lower end covering most common scenarios and the upper end representing the worst-case control module scenario.

Can You Drive with C1057?

For the majority of vehicles, C1057 does not leave you stranded. You can generally continue driving, though you may notice reduced functionality or a slight performance penalty. Treat it as a priority, however, if you experience stalling, a no-start condition, or warnings related to brakes and steering — in those cases the issue requires immediate professional attention.