C1164 — Park Brake Actuator Assembly Switch Circuit Failure

C1164 — Park Brake Actuator Assembly Switch Circuit Failure. A fault in the ABS / stability control. Short, gentle driving to a shop is usually possible. Typical causes: failed wheel speed sensor, faulty ABS module or pump motor, damaged tone (reluctor) ring on the hub.

chassis (brakes/steering/suspension)

Is it safe to drive?

Drive with caution The base brakes usually still work, so careful driving is possible — but ABS and stability control are disabled, which lengthens stopping distances on slippery roads. Fix promptly and avoid harsh driving.

How to diagnose with an OBD scanner

Read the code and freeze frame Connect an OBD2 scanner, confirm C1164 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
Check for companion codes and TSBs Related codes often reveal the real root cause. Also check manufacturer technical service bulletins (TSB) for your make and model — many C0xxx issues have factory fixes or software updates. Search by VIN on the manufacturer site or nhtsa.gov.
Inspect wiring and connectors Visually inspect the wiring harness and connectors related to the ABS / stability control for damage, corrosion, chafing or poor contact.
Subsystem check Read all four wheel speed PIDs while driving slowly — the faulty sensor drops out or reads implausibly.
Subsystem check Inspect the sensor and tone ring for metal debris and damage near the hub.
Verify the repair Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm C1164 does not return.

Approximate repair cost

Repair cost depends on which component actually failed. Typical scenarios for C1164 (parts and labor, USD, independent shop rates): Replace a wheel speed sensor: $120–$350; ABS module repair or replacement: $400–$1,200; Repair sensor wiring: $80–$250. Overall, fixing C1164 usually costs between $80 and $1,200. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.

Common questions

Is it safe to drive with C1164?

The base brakes usually still work, so careful driving is possible — but ABS and stability control are disabled, which lengthens stopping distances on slippery roads. Fix promptly and avoid harsh driving.

What does OBD2 code C1164 mean?

How do I diagnose C1164 myself?

Start with a scan: confirm C1164, save the freeze frame and note any companion codes. Then inspect the wiring and connectors related to the park brake actuator assembly switch circuit, and verify the suspect component against live data before buying parts.

How much does it cost to fix C1164?

Replace a wheel speed sensor — $120–$350; ABS module repair or replacement — $400–$1,200; Repair sensor wiring — $80–$250. Exact cost depends on the root cause, your vehicle and local labor rates — a proper diagnosis is the cheapest first step.

What are the symptoms of C1164?

Drivers most often notice: speedometer or cruise control issues, stability control disabled message, brake pedal pulsation changes, ABS not operating during hard braking.

When your vehicle's onboard diagnostics detect something wrong with the park brake actuator assembly switch circuit, they store trouble code C1164. This code belongs to the chassis category, specifically relating to the anti-lock braking and electronic stability control systems. The switch in question monitors the position or status of the parking brake mechanism and communicates that information back to the brake control module. When the signal from this switch doesn't match what the module expects to see—either due to an electrical fault, a mechanical failure in the switch itself, or wiring problems—the module logs C1164 and illuminates the brake warning light on your dashboard.

The module doesn't trigger C1164 after a single anomalous reading. It waits to confirm the fault persists across multiple drive cycles under specific conditions before activating the warning lamp. This two-trip design helps prevent false alarms from temporary electrical glitches. When C1164 is stored, the freeze frame data captures critical operating parameters at the moment of failure—engine speed, vehicle speed, brake application status, and battery voltage. This snapshot becomes invaluable for pinpointing exactly when and under what circumstances the problem occurred.

The parking brake actuator switch serves as a safety interlock in many systems. It lets the vehicle know whether the parking brake is engaged or released, which matters for automatic transmission shift interlocks, hill-start assist, and certain stability control functions that coordinate brake application during maneuvers.

Common Symptoms of C1164

When C1164 sets, you'll typically notice one or more of these warning signs:

ABS or ESC warning lamp illuminated on the instrument cluster
Electronic stability control system unavailable or disabled
Inoperative anti-lock brake function during emergency braking
Speedometer or cruise control behaving erratically
Unusual brake pedal feel or pulsation during normal braking
Dashboard warning related to parking brake status

What Causes C1164?

The underlying issues that trigger C1164 range from simple wiring problems to complete component failures:

Failed wheel speed sensor sending bad data to the brake module
Damaged sensor wiring or corroded connector disrupting the signal path
Faulty ABS module or pump motor unable to process inputs correctly
Blown fuse or low voltage supply to the ABS module
Damaged tone ring (reluctor) on the wheel hub causing erratic sensor readings
Physical damage to the park brake switch mechanism itself
Poor electrical ground connection affecting circuit integrity

How to Diagnose C1164

Follow this systematic approach to identify the root cause before replacing expensive parts:

Connect an OBD2 scanner, confirm C1164 is stored, and save the freeze frame data. This information shows engine conditions—load, RPM, temperature, vehicle speed—at the exact moment the fault occurred.
Review all related diagnostic trouble codes alongside C1164. Co-occurring codes often reveal the true source of the problem. Check manufacturer technical service bulletins for your specific make and model—many C0xxx codes have known factory remedies or software updates available.
Perform a thorough visual inspection of the wiring harness and connectors feeding the ABS and stability control systems. Look for damaged insulation, corroded terminals, chafed wires, or loose connections that could interrupt the electrical signal.
Monitor all four wheel speed sensor PIDs on your scan tool while driving at low speed. A faulty sensor will drop out intermittently or display implausible values compared to the other three wheels.
Inspect the tone ring and sensor for metal debris, bent teeth, or physical damage near the wheel hub assembly. Contamination here mimics electrical failures.
Clear the code, complete a full drive cycle that reproduces the freeze frame conditions, and verify C1164 does not return. Successful diagnosis means the fault is genuinely resolved.

How to Fix C1164

Address the least expensive and most common failures before considering major component replacement:

Replace a wheel speed sensor — $120–$350
Repair sensor wiring or connector — $80–$250
ABS module repair or replacement — $400–$1,200

How Much Does It Cost to Fix C1164?

Total repair cost depends entirely on which component is actually at fault. Based on typical independent shop rates in the United States:

Wheel speed sensor replacement (parts and labor) typically runs $120 to $350. Wiring harness or connector repairs generally cost between $80 and $250. If the ABS control module itself has failed, expect to pay $400 to $1,200 for repair or replacement. Most C1164 failures turn out to be sensor or wiring issues rather than module failure. A methodical diagnosis before purchasing parts prevents wasting money on the most expensive scenario when the problem is something simpler.

Can You Drive with C1164?

Your standard service brakes will continue functioning, so getting to a repair facility is possible with care. However, anti-lock braking and electronic stability control systems are disabled or operating in a limited capacity. This significantly increases stopping distances on wet, icy, or loose surfaces and reduces your ability to maintain control during emergency maneuvers. Treat C1164 as a caution-level issue—drive conservatively, avoid harsh braking, and schedule repairs promptly.