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
To diagnose 00522, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
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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.