M
p0410
Moderate
Mercedes-Benz · SUVs
Secondary Air Injection System Malfunction
Quick Answer
Error code P0410 on your Mercedes-Benz SUVs means: Secondary Air Injection System Malfunction. This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
  1. Failed secondary air injection pump motor
  2. Stuck or corroded combi valve (secondary air valve)
  3. Damaged air injection pump relay
  4. Cracked or disconnected secondary air hoses
  5. Water intrusion into the air pump housing
How to Fix It
1
Verify the secondary air pump activates during cold start by listening for pump operation
2
Test the air pump relay and check the fuse for continuity
3
Inspect secondary air injection hoses for cracks, disconnections, or moisture
4
Remove and inspect the combi valve for carbon buildup or corrosion
5
Replace the secondary air pump if it does not produce adequate airflow
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Secondary air injection pump
Combi valve
Air pump relay
Secondary air hoses
Related Error Codes
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