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Volvo S90 Secondary Air Injection Pumps

Volvo S90 Secondary air injection pumps

Starting at low prices, AutoBuffy stocks multiple secondary air injection pumps from top OE-quality brands. This pump forces fresh air into the exhaust stream during cold starts to burn off unburned hydrocarbons, helping the catalytic converter reach operating temperature faster. When it fails, your Volvo S90 will trigger emissions codes, fail inspection, and run the catalytic converter harder than it should.

Signs your Volvo S90 needs a new secondary air injection pump

  • Check Engine Light with stored codes P0410, P0411, P0412, P0414, or related AIR system fault codes
  • Failed emissions or smog test due to elevated hydrocarbon readings on a cold-start cycle
  • Audible grinding, whining, or rattling from the pump motor on cold start — typically lasts 30–90 seconds then stops
  • Pump runs continuously or never runs at all, both detectable with a scan tool live data check
  • Rotten egg or sulfur smell from the exhaust during warm-up, indicating incomplete combustion reaching the catalytic converter
  • Visible corrosion, cracked housing, or a seized pump shaft when inspecting the unit in the engine bay

Which secondary air injection pump should you buy for your Volvo S90?

The main decision is whether to buy an OE-equivalent remanufactured unit, a new aftermarket pump, or a genuine OEM part. You also need to confirm the pump configuration — some Volvo S90 applications use a single pump, others use dual pumps feeding separate cylinder banks — so match the part to your exact engine and model year before ordering.

New OEM / Dealer
Best for
Owners who want factory fit and the longest service life
What you get
Exact motor specs, connector, and bracket as original; typically the highest price point
New Aftermarket (Direct-Fit)
Best for
Budget-conscious DIYers who still want a fresh motor with no core charge
What you get
Brand-new pump wound to OE specs, plug-and-play fitment, manufacturer warranty
Remanufactured
Best for
Value buyers comfortable with a rebuilt unit
What you get
Professionally rebuilt motor with replaced brushes and bearings; lower cost, core charge usually required
Dual-Pump Kit
Best for
V-engine Volvo S90 applications with one pump per cylinder bank
What you get
Matched pair ensures balanced airflow to both banks; avoids a repeat repair when the second pump follows the first

Replacing the secondary air injection pump on a Volvo S90

Moderate⏱ 1–2 hoursSocket set with extensions (metric and standard)Combination wrench setHose clamp pliers or flat-blade screwdriverOBD-II scan tool (to clear codes and verify repair)Penetrating oil (for corroded bracket bolts)

Begin by disconnecting the battery negative terminal, then unplug the pump's electrical connector and loosen the air inlet and outlet hoses before unbolting the mounting bracket. Transfer any reusable brackets or hardware to the new pump, reinstall in reverse order, and ensure all hose clamps are snug to prevent vacuum leaks. After reconnecting the battery, use a scan tool to clear stored codes and monitor live AIR system data through a cold-start cycle to confirm the pump activates and the fault does not return.

Frequently asked questions

How much does it cost to replace secondary air injection pumps on a Volvo S90?
Parts start at low prices on AutoBuffy. Total repair cost depends on whether you also need the check valve, relay, or hoses replaced — those components often fail alongside the pump. DIY saves significantly on labor, which at a shop can add one to two hours of shop rate on top of the part cost.
Can I drive my Volvo S90 with a bad secondary air injection pump?
You can drive short distances, but it is not advisable for long. A failed pump keeps the Check Engine Light on, which masks other faults, and the unburned exhaust gases it fails to process accelerate catalytic converter degradation. Continued driving with a bad pump can turn a relatively inexpensive repair into a costly converter replacement.
What causes a secondary air injection pump to fail on a Volvo S90?
The most common causes are moisture ingestion — the pump can draw condensation from the hoses and flood the motor — and simple wear of the carbon brushes inside the motor over time. A stuck or leaking check valve is also a frequent culprit, allowing hot exhaust gases to backflow into the pump and burn out the motor prematurely.
Do I need to replace the check valve and relay when replacing the secondary air injection pump on my Volvo S90?
It is strongly recommended. The check valve blocks exhaust backflow that destroys pump motors; if it has failed once it will fail again and take out the new pump. The relay and wiring harness connector should also be inspected for corrosion. Replacing worn associated components at the same time prevents repeat failures and callbacks.
Will replacing the secondary air injection pump clear the Check Engine Light on my Volvo S90?
Yes, once the new pump is installed and the system passes its self-test, the ECM will clear the fault codes after one or more successful cold-start drive cycles. If the light returns, a related component — such as the check valve, relay, or AIR hose — may also be faulty and should be tested before assuming the replacement pump is defective.
How long does a secondary air injection pump last on a Volvo S90?
Service life varies widely depending on climate and maintenance, but most pumps last many years under normal conditions. Vehicles in humid or coastal environments tend to see shorter pump life due to moisture ingestion. Keeping the air intake hoses and check valves in good condition is the single biggest factor in maximizing pump longevity.

More parts for your Volvo S90

Intercooler HoseA/C Receiver Drier / Desiccant Element KitEngine Coolant Temperature Sensor ConnectorFuel Injection Pressure RegulatorTrunk Lid Lift SupportTrailing ArmControl Arm & Ball Joint AssemblyRack & Pinion Bellows Kit

Secondary air injection pumps for other Volvo models

Volvo V90Volvo 850Volvo C70Volvo 960Volvo S70Volvo V70