Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2001CAVALIER LS, 2.4 TREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 6 (ANTI-THEFT SYSTEM)SELF-DIAGNOSTIC SYSTEMCLEARING DIAGNOSTIC TROUBLE CODESUSING SCAN TOOL
2001 Chevrolet Cavalier LS, 2.4 T
Using Scan Tool
2001 Chevrolet Cavalier LS, 2.4 TSECTION Using Scan Tool
WARNING: This page is about a different car, the 2000 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
Select CLEAR DTCs function on scan tool. Clear current and history DTCs. Operate vehicle and recheck for DTCs.
NOTE:
DTCs affecting UTD operation can be stored in different systems. For UTD-related DTCs, see DIAGNOSTIC TROUBLE CODE INDEX
table. To access or clear DTCs, use scan tool or Instrument Panel Cluster clearing DTC feature.
DIAGNOSTIC TROUBLE CODE INDEX
| DTC | Description | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| B2236 (1) | Left Door Lock Switch Fault | ||||||||||
| B2237 (1) | Right Door Lock Switch Fault | ||||||||||
| B2252 (1) | Key Cylinder Switch Fault | ||||||||||
| B2253 (1) | Key Cylinder Switch Fault | ||||||||||
| B2587 (2) | Column Lock/Unlock Drive "A" | ||||||||||
| B2588 (2) | Column Lock/Unlock Drive "A" | ||||||||||
| B2592 (2) | Column Lock/Unlock Drive "B" | ||||||||||
| B2593 (2) | Column Lock/Unlock Drive "B" | ||||||||||
| B2721 (3) | PASS-Key(R) Detection Circuit Out Of Range | ||||||||||
| B2722 (3) | PASS-Key(R) Detection Circuit Short To Ground | ||||||||||
| B2723 (3) | PASS-Key(R) Detection Circuit Open/Short To Voltage | ||||||||||
| B2735 (3) | PASS-Key(R) Programming Mode Active | ||||||||||
| U1016 (4) | PCM Communication Loss | ||||||||||
| P1626 (5) | Theft Deterrent System Fuel Enable Circuit | ||||||||||
| P1630 (5) | Theft Deterrent In Learn Mode | ||||||||||
| P1630 (5) | Theft Deterrent Password Incorrect | ||||||||||
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.