B1695 — Autolamp On Circuit Short To Battery

How much does it cost to fix B1695?

BCM repair or replacement — $300–$900; Replace the switch or actuator — $120–$450; Repair wiring or connectors — $80–$250. Exact cost depends on the root cause, your vehicle and local labor rates — a proper diagnosis is the cheapest first step.

How do I diagnose B1695 myself?

Start with a scan: confirm B1695, save the freeze frame and note any companion codes. Then inspect the wiring and connectors related to the body electrical system, and verify the suspect component against live data before buying parts.

What are the symptoms of B1695?

Drivers most often notice: warning light on the dashboard, no impact on engine operation in most cases, the affected function (locks, windows, lighting, wipers) works intermittently or not at all.

Is it safe to drive with B1695?

Usually safe to drive — body codes rarely affect drivability. Exceptions: exterior lighting and wipers in bad weather, and central locking faults that can leave the car unsecured.

Will B1695 clear itself?

Sometimes B1695 clears after a few drive cycles if the fault was intermittent — for example a loose connector or a tank of bad fuel. The underlying cause usually remains, so the code tends to return. Clear it once; if it comes back, diagnose rather than erase it repeatedly.

When a scan tool pulls code B1695, it is flagging a specific electrical fault inside the body control system — specifically, a short to battery voltage on the autolamp-on circuit. This falls squarely within the body electronics group of OBD2 codes, which monitor comfort and convenience features rather than engine management. The body control module (BCM) or a shared control unit continuously watches this circuit while the vehicle is running, and if the signal stays outside its expected voltage window for long enough across consecutive drive cycles, B1695 gets stored and the check-engine or body-system light comes on.

The reason the module does this is straightforward: a short to battery means a wire is feeding constant 12-volt power where it should only receive switched or signal voltage. That condition can drain the battery, cause erratic operation of the affected component, or in some cases damage the module itself. When B1695 is set, the freeze frame data recorded at the same time is the single most useful piece of information on the scan tool — it captures engine rpm, load, coolant temperature, and vehicle speed the instant the fault occurred, giving you a reproducible starting point for testing.

Common symptoms of B1695

• The body-system or CEL light stays illuminated after the fault is detected
• Engine performance and drivability are unaffected in the vast majority of cases
• The specific function tied to the autolamp circuit — such as automatic headlights, interior lighting logic, or a linked switch — operates intermittently or stops working entirely
• The component may work briefly after a battery disconnect, then fail again once the BCM refreshes its inputs
• In some cases, related body codes (B0xxx series) appear alongside B1695 and point to a shared root cause
• Fuses related to the affected circuit may blow repeatedly if the short is still active

Most likely causes

Because B1695 describes a short-to-battery condition, the problem almost always originates in wiring or a component that is feeding voltage where it should not. The most frequent culprits are:

• Damaged or corroded wiring, particularly in door jambs, trunk hinges, or any area exposed to moisture or repeated flexing — broken insulation here is the top cause
• A faulty switch or actuator within the autolamp circuit that is internally shorted
• A body control module itself that has failed and is misreporting or allowing the short condition through its internal circuitry
• A blown fuse or failed relay that governs the autolamp circuit, sometimes indicating a downstream short rather than a component failure
• Poor electrical connections at plugs for the affected circuit, including corrosion or spread pins that create unintended short paths

How to diagnose B1695

Working through B1695 systematically keeps you from replacing good parts. Here is a practical diagnostic sequence:

1. Connect an OBD2 scanner, confirm B1695 is stored, and record the freeze frame data. Those snapshot readings tell you exactly what the engine was doing when the module detected the fault — use that as your target condition when road-testing later.
2. Pull all related codes at the same time. The B0xxx series frequently appears in groups, and a pattern across multiple codes often points to a single wiring problem or a failing module rather than several separate faults.
3. Check manufacturer technical service bulletins (TSB) for your exact make and model. Some vehicles have known software updates or factory fixes for recurring B1695 issues — search by your VIN on the manufacturer's site or at nhtsa.gov.
4. Perform a careful visual inspection of the wiring harness and connectors tied to the body electrical system. Look for chafed insulation, green corrosion on terminals, oil or moisture intrusion, and any signs of prior repair work that may have been done incorrectly.
5. Operate the affected function — the autolamp circuit or linked component — while monitoring live data on the scanner. Watch the switch state PID and motor/actuator feedback simultaneously; if the PID shows a constant-on condition when the switch is off, you have confirmed the short.
6. After clearing the code, complete a full drive cycle that recreates the freeze frame conditions (matching RPM, load, speed, and temperature). B1695 should not return if the fault was temporary or connector-related. If it comes back, the short is still present and active.

Repair options and what they cost

Fixing B1695 means eliminating whatever is feeding battery voltage into the autolamp circuit. Repair paths and typical costs (parts and labor, USD, independent shop rates) include:

• Repair damaged wiring or connectors — $80–$250. In many cases, reterminating a corroded plug or taping and routing a chafed wire solves the problem without any part replacement.
• Replace the faulty switch or actuator in the autolamp circuit — $120–$450. This is the next step if wiring checks out clean.
• BCM repair or replacement — $300–$900. Full module replacement is the costliest scenario and should only be pursued after wiring and switches have been ruled out.

Overall, fixing B1695 typically runs between $80 and $900, with the majority of cases landing in the lower half of that range. Spending time on a thorough diagnosis before buying expensive components almost always saves money — the BCM is the most expensive part to replace, and it is rarely the first thing that needs fixing.

Can you drive with B1695?

B1695 is a body-system fault, so it does not directly affect engine operation, transmission function, or braking. For most drivers in most conditions, the vehicle remains safe to operate. The practical exceptions are worth noting: if the fault involves exterior lighting, you lose automatic headlamp support and must manually manage lights in low-visibility conditions. Wiper motor involvement creates a safety hazard in rain or snow. Central locking faults tied to the same circuit could leave the car unsecured. Use common sense — get it diagnosed and repaired before it becomes a problem on a dark road or in bad weather.

Related OBD2 codes

• B1600: PATS Ignition Key Transponder Signal Is Not Received
• B1601: PATS Received Incorrect Key-Code From Ignition Key Transponder
• B1602: PATS Received Invalid Format Of Key-Code From Ignition Key Transponder
• B1603: Lamp Anti-Theft Indicator Circuit Failure
• B1604: Lamp Anti-Theft Indicator Circuit Open
• B1605: Lamp Anti-Theft Indicator Circuit Short To Battery