| Lambda probe and pre-catalyst lambda probe: testing |
| Special tools and workshop equipment required |
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| Fault reader -V.A.G. 1551- or vehicle systems tester -V.A.G. 1552- with lead -V.A.G. 1551/3B- |
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| Test box -V.A.G. 1598/31- |
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| Hand-held multimeter -V.A.G. 1526 A- or multimeter -V.A.G. 1715- |
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| Auxiliary measurement set -V.A.G. 1594 A- |
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