Code
P1695
BUICK
P — Powertrain
Remote Keyless Entry Circuit Low
Views:
UK: 33
EN: 47
RU: 41
AI status
Completed
Completed
100%
Causes
- Blown fuse for RKE/BCM circuits
- Weak or discharged vehicle battery
- Poor ground connection or corroded connector
- Damaged wiring (short to ground) to RKE receiver, antenna, or BCM
- Failed RKE receiver/module or BCM input circuit
- Water intrusion or connector corrosion at RKE components
Symptoms
- Remote key fob does not lock/unlock doors reliably or at all
- No response from remote but physical key works
- Intermittent locking/unlocking behavior
- Other body functions controlled by BCM may act erratically
- DTC stored and/or MIL may not be illuminated (body code)
What to check
- Verify vehicle and key fob batteries (voltage and condition)
- Scan for stored DTCs and freeze frame data (check for related body/communication codes)
- Check fuses and fusible links related to BCM/RKE power
- Inspect RKE receiver, antenna, and BCM connectors for corrosion, water, or damage
- Measure battery voltage at BCM and at RKE module power pins
- Probe RKE signal/feedback pin at BCM for voltage level and activity while operating fob
Signal parameters
- Vehicle battery nominal: 12.4–14.5 V with engine running; should not be below ~11.5 V during tests
- RKE power feed: battery voltage (check fuse-protected feed) at RKE/BCM harness
- RKE signal/antenna line: should not be stuck at 0 V (low). Idle may be near battery voltage or open-circuit depending on design
- Key fob RF frequency (for troubleshooting RF reception): manufacturer-specific (commonly 315 or 433 MHz)
- Resistance: expect continuity between RKE module and BCM where harness continuity specified; low resistance to ground indicates short
Diagnostic algorithm
- Safety first: disable ignition if required and use approved diagnostic procedures.
- Retrieve all codes and freeze frame with a proper scan tool; note related body or communication codes.
- Verify vehicle battery voltage and state of charge; charge or replace battery if low.
- Inspect and verify fuses and fusible links that feed the BCM and RKE receiver; replace any blown fuse.
- Visually inspect RKE module/antenna, BCM connectors and wiring for corrosion, water intrusion, loose pins, or physical damage.
- With ignition ON, measure supply voltage at RKE module power pin(s) and at the BCM RKE input pin; compare to battery voltage.
- Operate the key fob while probing the RKE input at the BCM to confirm signal activity; note if circuit is stuck near 0 V.
- If circuit is low, disconnect connectors and check for short to ground: measure resistance from RKE signal/power circuit to chassis ground.
- If short found, isolate by disconnecting harness sections or modules until short is removed; repair wiring or replace damaged connector.
- If wiring and power are good, swap with a known-good RKE module (if available) or replace RKE receiver. If replacement module does not clear, consider BCM input fault.
- After repairs, clear codes and road/test; re-scan to confirm code does not return and RKE operation is normal.
- If multiple body/communication codes present or BCM suspected, consult vehicle-specific wiring diagrams and service manual for BCM replacement/calibration procedures.
Likely causes
- Blown fuse protecting the RKE receiver or BCM
- Short to ground on the RKE signal/antenna feed between RKE module and BCM
- Faulty RKE receiver (aftermarket module or factory unit)
- Corroded connector at BCM or RKE receiver causing low voltage
- Failed BCM input driver for the RKE circuit
Fault status
Status
Remote Keyless Entry Circuit Low — low voltage or short to ground detected on the RKE circuit/receiver input to the body control module.
Repair difficulty: Medium
Diagnostic time: 1-2 hours
Similar codes
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email