P1648
Anti-Theft Device Wrong Security Code
Severity
🔴 HighCan you drive?
Yes, but get it checked soon
Approx. repair cost
$17–167 (est.)
Symptoms
- Engine won't start
- The immobilizer indicator is flashing
- No fuel supply
- No ignition spark
- Fault message on the dashboard
Causes
- Faulty chip in the ignition key
- Problems with the immobilizer antenna
- Malfunction of the immobilizer control unit
- Dead battery in the key (for keyless entry)
- Incorrect key programming
How to Fix
- Check the battery in the ignition key
- Use backup key
- Diagnostics of the immobilizer system with a scanner
- Reprogramming keys at an authorized dealer
- Repair or replacement of the immobilizer control unit