P1432 — Secondary Air Injection System Incorrect Flow Detected

What Does P1432 Mean?

P1432 is a manufacturer-specific diagnostic trouble code: Secondary Air Injection System Incorrect Flow Detected. This code applies to BMW, BUICK, CADILLAC, CHEVY, CHRYSLER 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 P1432

⚠️ Check Engine Light (MIL) illuminated
⚠️ Secondary Air Injection System Incorrect Flow Detected not functioning as expected
⚠️ Related system may be in fail-safe mode
⚠️ Reduced engine performance

Common Causes

🔍 Faulty Secondary Air Injection System Incorrect Flow Detected
🔍 Wiring or connector issue in Secondary Air Injection System Incorrect Flow Detected circuit
🔍 Related mechanical or electrical fault
🔍 ECM/PCM issue (rare)

Frequently Asked Questions

What does P1432 mean?

P1432 indicates: Secondary Air Injection System Incorrect Flow Detected. The vehicle's computer has detected that the Secondary Air Injection System Incorrect Flow Detected is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P1432?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P1432 for extended periods may cause additional problems.

How much does it cost to fix P1432?

Repair costs for P1432 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 Secondary Air Injection System Incorrect Flow Detected and related wiring
🔧 Replace faulty Secondary Air Injection System Incorrect Flow Detected

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.

P1432: Secondary Air Injection System Incorrect Flow Detected