Volkswagen Golf Mk7 Service & Repair Manual: Types of protective tube on uniform Lambda probes

Beyond the part number, this page explains how the protective tube type identifies a Lambda probe — Type D1, with 6 openings of 3.5 mm each, is used only on 4-pin LSF probes.

Note In addition to identifying by way of the part number, the protective tube can also be used as a means of identification. Type D1, 6 openings at 3.5 mm each

Only used on 4-pin LSF Lambda probes. Type D2, 6 openings at 2 mm each

Only used on 4-pin LSF Lambda probes and 6-pin LSU Lambda probes. Type D4, 12 openings at 1.4 mm each

Only used on 4-pin LSF Lambda probes and 6-pin LSU Lambda probes.

Questions & answers

Types of protective tube on uniform Lambda probes — Volkswagen Golf Mk7

What protective tube types exist on Golf Mk7 lambda probes?

Single-wall and double-wall protective tubes over the sensing element. The tube type affects gas flow to the sensor — always replace with the matching type.

Renewing LSU Lambda probe (6-pin)

  Note If necessary, replace attachment parts, cable ties or marking rings to match the uniform probe to the defective probe as specified. ...

Other materials:

• Renewing LSF Lambda probe (4-pin)
• Renewing LSU Lambda probe (6-pin)
• Removing and installing upper transverse link, four-wheel drive
• Removing and installing front seat
• Assembly overview - high-pressure pump