Just brought t5 friday as taking for mot, engine management light came on

WATWILL

MEMBER
2008 VOLKSWAGEN TRANSPORTER
96 MILES

Been advised po406 egr sensor a circuit high or po653 voltage b circuit high or po672 glow plug circuit failex also a buzz sound under bonet when turn ignition off lasts about a min, can you help me thanks

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RIVERMIKERAT

MEMBER

Can you determine where under the bonnet the buzzing is coming from? Usually, when multiple sensors are showing failure or problems, it's either a problem with the computer, a loose connector at the ECM, or a bad ECM. Could also be a bad ECM or sensor ground.

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Sunday, November 20th, 2011 AT 11:53 PM

WATWILL

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Thanks for reply the buzzing is comming from a switch or pump above the rocker cover on a bracket fixed to the bulkhead, there is a pipe comming fron the rockercover to this switch or pump, and pipes leading off it, ther is A ELECTRIAL FEED TO THE SWITCH OR PUMP, some times the buzzing comes on when driving, for thirty seconds and stops, many thanks derek

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Tuesday, November 22nd, 2011 AT 7:05 PM

RIVERMIKERAT