Driver Window Current Sense Circuit Low
The B2357 code indicates that the body control module (GEM/FEM) has detected a voltage signal below the expected threshold in the driver window motor current sense circuit. This circuit monitors the window motor's electrical draw to detect obstructions (anti-pinch function) and determine window position. A low reading suggests an interruption in the signal path, a short to ground, or a control module fault preventing proper current measurement.
1. Commonly Affected Makes
2. Most Common Causes
- Short to ground in the window motor current sense circuit wiring
- Open circuit or excessive resistance in the current sensor or its wiring
- Internal failure of the body control module (GEM/FEM) containing the sense circuit
- Window lift motor drawing abnormally low current or disconnected
- Corroded, loose, or damaged window motor connector
- Faulty window lift control module (if applicable for certain models)
3. Symptoms You Will Notice
- Driver window may not operate or operates erratically
- Anti-pinch feature may be disabled or malfunctioning
- Window may not auto-up or auto-down
4. Step-by-Step Diagnosis
Scan for additional codes and check freeze frame data
Inspect wiring and connectors at the driver window motor for damage, corrosion, or looseness
Measure voltage and resistance in the current sense circuit per manufacturer specifications
Test window motor current draw with a multimeter or lab scope
Check for shorts to ground or opens in the circuit
If wiring and motor are okay, suspect a faulty body control module (GEM/FEM)
5. Frequently Asked Questions
Is it safe to drive?▼
Yes, but the driver window may not function properly, and the anti-pinch feature may be disabled. Have it diagnosed soon to avoid further issues.
How much does it cost to fix?▼
Diagnosis typically $100-$150. Repair costs vary: wiring repair $150-$300, window motor replacement $200-$400, body control module replacement $500-$1000 including programming.