Air system faulty solenoid valve

Tiny
DEZMAXWE11
  • MEMBER
  • 2002 AUDI A6
  • V8
  • 4WD
  • AUTOMATIC
  • 97,459 MILES
Audi A6 4.2 V8 Quattro 2002. Diagnostic code P0492 - Faulty air solenoid valve and air system relay.
What is the repair cost to fix the problem? Vehicle hesitates and ******" before slowly accelerating after coming out of a stop. Full pressure on gas throttle with delayed weak response. Problem is worse going uphill.
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Monday, June 6th, 2011 AT 8:59 PM

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Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
It most probably is a fault with the power supply to the secondary air pump, the pump itself or a faulty relay.

Cost would depend on what needs to be done but this should not be a very costly job.

Checking voltage supply for secondary air pump relay

? Check fuse for Secondary Air Injection (AIR) Pump Relay -J299-.

If the fuse is not faulty:
NOTE:
The secondary air pump relay is located in the E-box in the plenum chamber.

? Remove secondary air pump relay from relay carrier.
? Test voltage supply (B+ 30) for relay.

If no malfunctions are identified in the voltage supply for the relay.

? Replace Secondary Air Injection (AIR) Pump Relay -J299-.
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Tuesday, June 7th, 2011 AT 1:56 PM

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