00438

00438 - Fuel Supply Sensor 2 (G169)

00438 - Fuel Supply Sensor 2 (G169): Open or Short to Plus

• Fuel gauge reading incorrect. May be stuck on empty.
• Instrument cluster display reads Electrical fault in fuel tank (or similar) message.

Possible Causes

• Wiring between Fuel Level 2 (G169) and Instrument Cluster faulty
• Ground issues
• In-tank connectivity issues to Fuel Level 2 (G169)
• Faulty Fuel Level 2 (G169)
• Faulty Instrument cluster

Possible Solutions

• Check all wiring including grounds to/from Instrument Cluster and Fuel Level 2 (G169)
• Check applicable Measuring Block(s) or Advanced Measuring Values
• Check resistance specifications per the factory level repair manual using a DVOM
• Check for in-tank connection issues
• Check/Replace Fuel Level 2 (G169)
• Check/Replace Instrument cluster.
  • Notes
    • If any other functions of the Instrument Cluster are malfunctioning make sure to save a complete Auto-Scan before powering down (unplugging) the control module for at least 30 minutes to see if the problem is temporarily fixed.
    • If the Instrument cluster is faulty make sure the installed system can be matched using the PIN and VCDS as per our Immobilizer page.

Special Notes

• When 00438 is found in conjunction with 00771 in the NAR market (4F) chassis A6 see TPI 2020884 to determine if the 4F0 298 200 B (or newer) repair kit is needed.
• When 00438 is found in conjunction with 00771, 00439 or 00251 in the NAR market (42) chassis R8 see TPI 2022203 determine if the 420 298 200 A (or newer) repair kit is needed.