00522 on 1996-2001 Audi A4 — Engine Coolant Temperature Sensor (G62): Open Circuit / Short to Positive (B+)
1 vehicles · 1 makes · $30-$180 repair
Most Reported On
00522 is an OBD-II diagnostic trouble code meaning “Engine Coolant Temperature Sensor (G62): Open Circuit / Short to Positive (B+).” This is a VAG (VW/Audi/SEAT/Skoda) fault code reported by VCDS/VAG-COM indicating a problem in the Engine Coolant Temperature Sensor (G62) circuit, specifically a break in the wiring or a short circuit to positive (B+). When this circuit fails, the ECU receives an implausible coolant temperature signal and misreads engine temperature, which causes incorrect fuel and (on diesels) glow-plug control. Typical symptoms include hard cold starting, abnormally high or irregular idle (often 1200-3000 rpm) on a warm start, and poor acceleration during warm-up. This code is most commonly reported on 1996-2001 Audi A4, with repair costs ranging from $30 to $180.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
00522 does not use the standard P/B/C/U prefix. It may be a manufacturer-specific code, so verify that a scanner supports your exact year, model and module before buying.
FAQ
What does 00522 mean?
00522 stands for "Engine Coolant Temperature Sensor (G62): Open Circuit / Short to Positive (B+)." This is a VAG (VW/Audi/SEAT/Skoda) fault code reported by VCDS/VAG-COM indicating a problem in the Engine Coolant Temperature Sensor (G62) circuit, specifically a break in the wiring or a short circuit to positive (B+). When this circuit fails, the ECU receives an implausible coolant temperature signal and misreads engine temperature, which causes incorrect fuel and (on diesels) glow-plug control. Typical symptoms include hard cold starting, abnormally high or irregular idle (often 1200-3000 rpm) on a warm start, and poor acceleration during warm-up.
What are the most common causes of 00522?
The most common causes of 00522 are: Faulty Engine Coolant Temperature Sensor (G62) itself, Wiring or connector fault in the G62 circuit (chafed, damaged, or shorted to B+), Moisture/corrosion in the G62 wiring harness or connector, Broken/open wire causing loss of signal, Damaged connector or poor ground/terminal contact at the sensor. The specific cause varies by vehicle.
How much does it cost to fix 00522?
Repair costs for 00522 range from $30 to $180, depending on the vehicle and root cause.
Which vehicles are affected by 00522?
Au7o has documented 00522 across 1 vehicle models from 1 manufacturers: Audi.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.