DTC P1625: Immobilizer Antenna Error: Troubleshooting

2013 Suzuki SX4 Crossover, Automatic CVT TransSECTION Troubleshooting
WARNING: This page is about a different car, the 2011 Suzuki SX4. However, it is still accessible from the selected car via links, so may be relevant.
P1625: TROUBLESHOOTING CHART

Step Action YES NO
Was "Immobilizer Control System Check" performed?  Go to Step 2. Go to IMMOBILIZER CONTROL SYSTEM CHECK .
DTC confirmation 
  1. Clear DTC referring to DTC CLEARANCE .
  2. Turn the ignition switch to OFF position.
  3. Check DTC referring to DTC CHECK .

Is DTC P1625 still detected? 
Substitute a known-good ICM and recheck DTC. If DTC P1625 is still detected, substitute a known-good ECM and recheck. Intermittent trouble. Check for intermittent referring to INTERMITTENT AND POOR CONNECTION INSPECTION .
RENDER: 1.0x

NO RELATED

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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.