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Home >> Volvo >> 1995 >> 850 GLT, 4D Sedan, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 2 (Engine Controls - Tests W/Codes - Non-Turbo (A/T) - MOTRONIC 4.4) >> Circuit Tests >> DTC 445 - Pulsed Secondary Air Injection System (Pair) Pump Signal >> Possible Causes (Signal Too High)

Possible Causes (Signal Too High)

WARNING: This page is about a different car, the 1996 Volvo 850. However, it is still accessible from the selected car via links, so may be relevant.
  1. Short-circuit to supply voltage in signal cable
  2. Defective PAIR pump relay
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