B1207: EIC Switch Circuit Short to Battery
The B1207 code indicates that the Instrument Cluster (IC) or Body Control Module (BCM/GEM) has detected a short circuit to battery voltage (B+) in the signal circuit of the Electronic Instrument Cluster (EIC) switch assembly 1. This typically affects steering wheel-mounted controls (cruise, audio, info buttons) or message panel switches, preventing the receiving module from reading their inputs correctly.
1. Commonly Affected Makes
2. Most Common Causes
- icon icon-cause">🔧EIC switch signal circuit wiring shorted to battery positive (B+)
- Damaged steering wheel switch connector or clockspring with shorted pins
- EIC switch assembly (steering wheel/panel buttons) internally shorted to power
- Internal failure of the receiving module (IC/BCM/GEM) at the input pin
3. Symptoms You Will Notice
- Steering wheel controls (cruise, audio, info) not working or intermittent
- Message panel or other EIC switches unresponsive
4. Step-by-Step Diagnosis
Scan for codes and verify B1207 is present; check for related codes.
Inspect wiring and connectors between EIC switches and module for shorts to B+.
Test clockspring continuity and check for pin damage or shorts.
Isolate the fault by disconnecting the switch assembly; if code clears, replace switch; if not, test module input pin for short.
5. Frequently Asked Questions
Is it safe to drive?▼
Yes, the vehicle is generally safe to drive, but affected controls (e.g., cruise control, audio) may not work. Have it diagnosed soon to prevent potential battery drain or further issues.
How much does it cost to fix?▼
Repair costs typically range from $100 to $400, depending on whether the issue is a wiring repair, clockspring replacement, or module replacement.