P2436 moderate
Secondary Air Injection System Pump Malfunction Circuit High
Can I Drive?
Short Distances Only
DIY Difficulty
moderate
Estimated Cost
$150 - $700 (parts and labor)
What does P2436 mean?
The P2436 code means the vehicle's onboard diagnostic system has detected: Secondary Air Injection System Pump Malfunction Circuit High. This is a moderate severity code.
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Common Symptoms
- Check Engine Light on
- Failed emissions test
- No air pump noise on cold start
- Slightly rough cold start idle
- Sulfur smell on cold start
Probable Causes (Ranked by Likelihood)
- Open circuit in air pump circuit Very High
- Corroded air pump relay or connector High
- Damaged wiring to air pump motor Moderate
- ECM air pump driver circuit fault Low
Step-by-Step Diagnostic Procedure
-
Test secondary air pump by applying direct power
-
Check air pump relay operation
-
Inspect wiring to air pump for damage
-
Verify ECM command to air pump relay with scan tool
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Frequently Asked Questions
What does P2436 mean?
P2436 indicates: Secondary Air Injection System Pump Malfunction Circuit High. The ECM detected an issue that needs diagnosis and repair.
Is P2436 urgent?
This code should be addressed soon to maintain proper engine operation.
What should I check first?
Start with a visual inspection of the sensor wiring and connector. Use a scan tool to read live data. For DPF codes, check soot loading level. For EVAP codes, check the gas cap first.