What Does B1354 Mean?
This code indicates the Body Control Module (BCM) has detected an abnormal short circuit to ground in the ignition key-in reminder circuit. This system monitors when the key is inserted in the ignition and typically triggers the warning chime when the driver's door opens with the key present. The BCM detected that the key-in signal wire is shorted directly to vehicle ground, creating a continuous low-voltage condition instead of the expected switching signal.
Common Causes
40%
Damaged or pinched wiring in the ignition cylinder/steering column harness causing short to ground on key-in signal wire
30%
Faulty ignition key cylinder switch with internal short circuit to ground
20%
Water intrusion or corrosion in ignition cylinder connector causing ground short
10%
Failed Body Control Module (BCM) with internal circuit fault on key-in input
Diagnostic Steps
1
Step 1: Perform visual inspection of the ignition cylinder wiring harness and connectors in the steering column area. Look for damaged insulation, pinched wires, water intrusion, or corrosion. Check connector pins for bent terminals or moisture.
2
Step 2: Disconnect the ignition cylinder switch connector and use a digital multimeter to measure resistance between the key-in signal wire (circuit side toward BCM) and chassis ground with key removed. Reading should be infinite ohms (open circuit); any reading below 10k ohms confirms a short to ground in the wiring harness.
3
Step 3: If wiring tests good, measure resistance across the ignition cylinder switch terminals for the key-in circuit with key inserted and removed. Verify switch operation matches manufacturer specifications (typically open circuit with key out, closed/low resistance with key in). Any continuous ground connection indicates faulty switch.
4
Step 4: If both wiring and switch test normal, perform BCM input voltage test by backprobing the key-in signal wire at the BCM connector with key inserted. Should read battery voltage or pulled-up voltage (typically 5V or 12V depending on system); constant 0V indicates BCM internal fault.
5
Step 5: Repair identified fault (replace damaged wiring, ignition switch, or BCM). Clear codes and verify proper key-in chime operation by inserting key and opening driver's door. Retest with scan tool to confirm no code returns.
Estimated Repair Cost
$100 - $450
Parts + labor, varies by vehicle and location
This code indicates the Body Control Module (BCM) has detected an abnormal short circuit to ground in the ignition key-in reminder circuit. This system monitors when the key is inserted in the ignition and typically triggers the warning chime when the driver's door opens with the key present. The BC...
The most common cause of B1354 (Ignition Key-In Circuit Short To Ground) is: Damaged or pinched wiring in the ignition cylinder/steering column harness causing short to ground on key-in signal wire
Typical repair costs for B1354 range from $100 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to continue driving as this only affects the key-in warning chime reminder system. This is a convenience feature failure that does not impact vehicle operation, though you may forget keys in the ignition without the audible warning.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B1354 to identify the root cause.
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Quick Info
Category
Body
System
Body Control and Warning Systems
Difficulty
Type
Manufacturer
Recommended Tools
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