C1167 — Park Brake Actuator Assembly Switch Released Circuit Short to Gnd #

Note: The code description may vary depending on the vehicle manufacturer. Always confirm with OEM repair data for your specific make and model.

• Ford: Park Brake Actuator Assembly Switch Released Circuit Short to Ground
• Nissan: Park Brake Actuator Switch Circuit Short to Ground
• Toyota: Parking Brake Actuator Released Switch Short to GND

Summary of DTC C1167 #

The C1167 diagnostic trouble code (DTC) indicates that the Electronic Parking Brake (EPB) control module has detected a short-to-ground condition in the circuit for the parking brake actuator assembly switch’s “released” signal. In simple terms, the system expects a certain voltage or signal when the parking brake is off, but instead, it detects a direct connection to ground, suggesting an electrical fault. This code is part of the on-board diagnostics (OBD-II/EOBD) suite that monitors electronic brake systems for safety and reliability. If this fault is present, the parking brake system may not respond as intended, impacting the vehicle’s parking and holding functions. Prompt diagnosis and repair are important to restore correct parking brake operation and ensure vehicle safety.

Common Symptoms for Code C1167 #

Drivers and technicians may notice a range of symptoms when code C1167 is stored. Because the parking brake system is partially or fully disabled, both performance and warning indicators can be affected. The most frequent symptoms include:

• Parking brake warning light illuminated on the dashboard
• Electronic Parking Brake (EPB) inoperative or slow to engage/release
• Warning messages related to the parking brake system
• Unusual noises from the parking brake actuator
• Failure of the parking brake to release or engage properly
• Possible ABS or traction system warning lights (in some vehicles)

Probable Causes for Code C1167 #

The C1167 code typically points to an electrical problem within the parking brake actuator assembly switch circuit. While several factors can trigger this DTC, some causes are more common than others. Here’s a prioritized list based on technician experience:

1. Damaged or shorted wiring in the actuator switch harness (often due to abrasion, corrosion, or rodent damage)
2. Faulty parking brake actuator assembly switch (the switch itself may have internal shorting)
3. Water intrusion or corrosion at connectors or within the actuator unit
4. Incorrectly performed previous repairs (misrouted or pinched harnesses)
5. Defective Electronic Parking Brake (EPB) control module (rare but possible)

Step-by-Step Diagnostic for Code C1167 #

Diagnosing C1167 requires a systematic approach. Rushing through steps or skipping key checks can lead to misdiagnosis, unnecessary parts replacement, or a recurring fault. Here’s a proven step-by-step process:

• Verify the code: Use a scan tool to confirm C1167 is active and check for any related codes.
• Review freeze-frame data: Note when and under what conditions the fault was set.
• Inspect the parking brake actuator area: Look for obvious wiring damage, loose connectors, or corrosion.
• Check wiring continuity: With the battery disconnected, use a multimeter to test for shorts to ground and continuity between the switch and EPB module.
• Test the actuator assembly switch: Follow OEM procedures to check switch operation and resistance. Compare readings to specifications.
• Examine connectors: Look for bent pins, moisture, or corrosion; clean and repair as needed.
• Check for technical service bulletins (TSBs): Some OEMs may have known issues or updated repair procedures.
• If no faults found: Test or substitute the EPB module as a last resort.
• Clear codes and retest: Confirm repair by cycling the ignition and confirming the code does not return.

Possible Repairs for Code C1167 #

Once the root cause is identified, repairs can be targeted and effective. Here are the most common fixes associated with C1167:

• Repair or replace damaged parking brake switch wiring harness
• Replace the parking brake actuator assembly switch if faulty
• Clean or replace corroded connectors and terminals
• Correct any previous incorrect wiring repairs or routing issues
• Replace the Electronic Parking Brake (EPB) control module if verified defective (only after all other causes are ruled out)

Is It Safe to Drive With Code C1167? #

Limited. Driving is possible, but it is not recommended for extended periods. The parking brake may not engage or release correctly, posing a safety risk, especially on inclines or when parking. In some cases, the system may apply the brake unexpectedly or fail to hold the vehicle. It’s best to address the issue promptly to ensure the parking brake’s reliability and your peace of mind.

Vehicles Most Commonly Affected by Code C1167 #

While C1167 is a generic chassis code, it is most frequently reported on vehicles equipped with electronic parking brakes, particularly those from the following brands:

• Ford (Focus, Edge, Explorer, Fusion, Escape)
• Nissan (Altima, Rogue, Murano, Pathfinder)
• Toyota (Camry, RAV4, Highlander, Prius)
• Lexus (RX, ES, NX)
• Infiniti (QX60, Q50)

Other makes and models with electric parking brake systems may also be affected. Always confirm code meaning and repair steps with the OEM service information for your specific vehicle.

Common Mistakes & Best Practices for Code C1167 #

When troubleshooting C1167, even experienced technicians can fall into traps. Avoiding these common mistakes can save time and prevent repeat repairs:

• Overlooking basic visual inspection: Failing to spot obvious wiring or connector damage before testing components.
• Replacing the actuator or control module prematurely: Always verify wiring integrity first.
• Ignoring TSBs or OEM updates: Some issues are known to manufacturers and have improved repair strategies.
• Not clearing codes and retesting: Always confirm the repair by cycling the system and checking for code recurrence.
• Using incorrect or makeshift connectors: Always use OEM-quality parts and proper weatherproof connectors to avoid future issues.

Quick FAQ for Code C1167 #

Here are concise answers to common questions about C1167:

• Can I reset the code by disconnecting the battery?
  Disconnecting the battery may temporarily clear the code, but the underlying fault will cause it to return. Correct diagnosis and repair are required for a permanent fix.
• Is this a common failure on vehicles with electric parking brakes?
  Yes, as electric parking brakes age, wiring and switch faults become more frequent, especially in harsh climates or after mechanical work near the actuator.