P1764: Low And Reverse Brake Failsafe Valve Malfunction

MAZDA CHRYSLER DODGE JEEP PLYMOUTH PONTIAC

Severity

Medium

System

Manufacturer-Specific Powertrain

Last reviewed: Jan 1, 0001 Last updated: Jan 1, 0001

Methodology: We combine code standards with complaint and reliability patterns, then review for clear, vehicle-first diagnosis steps.

Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).

Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.

What Does P1764 Mean?

P1764 is a manufacturer-specific diagnostic trouble code: Low And Reverse Brake Failsafe Valve Malfunction. This code applies to MAZDA, CHRYSLER, DODGE, JEEP, PLYMOUTH vehicles. Unlike generic OBD-II codes, manufacturer-specific codes are defined by the vehicle maker and may only apply to certain makes and models.

Symptoms of P1764

⚠️ Check Engine Light (MIL) illuminated
⚠️ Low And Reverse Brake Failsafe Valve not operating correctly
⚠️ Related system in reduced functionality mode
⚠️ Reduced engine performance

Common Causes

🔍 Low And Reverse Brake Failsafe Valve has failed or is degraded
🔍 Wiring or connector issue in Low And Reverse Brake Failsafe Valve circuit
🔍 Related mechanical component affecting Low And Reverse Brake Failsafe Valve
🔍 Software update needed for ECM/PCM

Frequently Asked Questions

What does P1764 mean?

P1764 indicates: Low And Reverse Brake Failsafe Valve Malfunction. The vehicle's computer has detected that the Low And Reverse Brake Failsafe Valve is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P1764?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P1764 for extended periods may cause additional problems.

How much does it cost to fix P1764?

Repair costs for P1764 typically range from $80 to $300, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Inspect Low And Reverse Brake Failsafe Valve and related wiring
🔧 Replace faulty Low And Reverse Brake Failsafe Valve

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.