P1419

What P1419 Means

Code P1419 points to a fault in the secondary air injection system. This system reduces emissions during a cold start by pumping atmospheric air into the exhaust manifold, which helps burn fuel more completely and brings the catalytic converter up to temperature faster.

The system consists of an electric air pump, a secondary air valve (combination valve), vacuum lines, and a pressure sensor. When a fault is detected, the DME (engine control unit) sets code P1419. The error can be caused by a failed pump, valve, or pressure sensor.

Symptoms

• Check Engine light comes on in the instrument cluster.
• Possible fuel smell from the exhaust.
• Increased fuel consumption.

Diagnosis and Repair

1. Read the fault codes with diagnostic equipment (ISTA, INPA) and check for related errors.
2. Check the secondary air pump: confirm it runs by applying power directly.
3. Check the secondary air valves: inspect the valve for sticking or damage.
4. Check the vacuum lines: inspect the hoses for cracks, breaks, and correct routing.
5. Check the pressure sensor (if equipped): compare its readings against reference values.
6. Replace the faulty components: pump, valve, vacuum lines, or pressure sensor.

After the repair, clear the codes and take a test drive to confirm the fault does not return.

Secondary Damage

No data on secondary damage.