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P2A37: AFCM Power Relay Sense Circuit High

Severity
Medium
System
Vehicle Systems

What Does P2A37 Mean?

P2A37 is a diagnostic trouble code indicating: AFCM Power Relay Sense Circuit High. This code relates to the vehicle systems system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P2A37

Common Causes

Frequently Asked Questions

What does P2A37 mean?
P2A37 indicates: AFCM Power Relay Sense Circuit High. The vehicle's computer has detected that the AFCM Power Relay Sense is not operating within its expected parameters and stored this diagnostic trouble code.
Can I drive with code P2A37?
You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P2A37 for extended periods may cause additional problems.
How much does it cost to fix P2A37?
Repair costs for P2A37 typically range from $20 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 and repair AFCM Power Relay Sense wiring for short to voltage
  • 🔧 Clean or replace corroded AFCM Power Relay Sense connector
  • 🔧 Replace faulty AFCM Power Relay Sense
  1. 1
    Find your vehicle above

    Click your make and model for real owner reports and common causes specific to your vehicle.

  2. 2
    Check for recalls

    Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.

  3. 3
    Get a professional diagnosis

    A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

Related Codes

P2A00 O2 Sensor Circuit Range/Performance Bank 1 Sensor 1 P2A01 O2 Sensor Circuit Range/Performance Bank 1 Sensor 2 P2A02 O2 Sensor Circuit Range/Performance Bank 1 Sensor 3 P2A03 O2 Sensor Circuit Range/Performance Bank 2 Sensor 1 P2A04 O2 Sensor Circuit Range/Performance Bank 2 Sensor 2 P2A05 O2 Sensor Circuit Range/Performance Bank 2 Sensor 3 P2A06 O2 Sensor Negative Voltage Bank 1 Sensor 1 P2A07 O2 Sensor Negative Voltage Bank 1 Sensor 2 P2A08 O2 Sensor Negative Voltage Bank 1 Sensor 3 P2A09 O2 Sensor Negative Voltage Bank 2 Sensor 1