What Does P1413 Mean?
The secondary air injection pump relay control circuit has detected a low voltage signal. The PCM is unable to properly control the air pump relay due to insufficient voltage in the control circuit.
Common Causes
35%
Failed secondary air injection pump relay
30%
Damaged or shorted wiring in relay control circuit
20%
Corroded or loose relay connector terminals
10%
PCM internal driver circuit failure
5%
Poor ground connection in relay circuit
Diagnostic Steps
1
Step 1: Locate secondary air pump relay and inspect connector for corrosion or damage
2
Step 2: Test relay function by swapping with identical relay if available, or bench test with power and ground
3
Step 3: Check voltage at relay control terminal with key on, engine running (should see 12V when commanded)
4
Step 4: Test wiring continuity between PCM and relay, check for shorts to ground
5
Step 5: If wiring and relay are good, suspect PCM driver circuit failure
Estimated Repair Cost
$100 - $350
Parts + labor, varies by vehicle and location
The secondary air injection pump relay control circuit has detected a low voltage signal. The PCM is unable to properly control the air pump relay due to insufficient voltage in the control circuit.
The most common cause of P1413 (Secondary Air Injection Pump Relay Control Circuit Signal Low) is: Failed secondary air injection pump relay
Typical repair costs for P1413 range from $100 to $350, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to drive, but will cause emissions test failure and may trigger check engine light. Cold start emissions will be elevated.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1413 to identify the root cause.
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Quick Info
Category
Powertrain
System
Emissions Control - Secondary Air Injection
Difficulty
Type
Manufacturer
Recommended Tools
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