B1332 — Decklid Ajar Rear Door Circuit Open

What does OBD2 code B1332 mean?

OBD2 code B1332 flags a problem with the body electrical system (decklid ajar rear door circuit open). The car is usually drivable while you plan the repair. Common culprits: damaged wiring in door jambs or wet areas, corroded or loose connectors, faulty switch, motor or actuator of the affected system.

Will B1332 clear itself?

Sometimes B1332 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.

What is the most common cause of B1332?

The most common causes are: damaged wiring in door jambs or wet areas, corroded or loose connectors, faulty switch, motor or actuator of the affected system.

How do I diagnose B1332 myself?

Start with a scan: confirm B1332, save the freeze frame and note any companion codes. Then inspect the wiring and connectors related to the decklid ajar rear door, and verify the suspect component against live data before buying parts.

What are the symptoms of B1332?

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.

When the body control module detects that the electrical pathway for the decklid ajar rear door circuit has been interrupted, it stores OBD2 code B1332. The term "circuit open" tells you exactly what the module found — somewhere along that circuit, the flow of electricity has been cut off. It could be a severed wire, a connector that has worked loose, corrosion eating away at a pin, a fuse that has blown, or an internal failure inside a switch or motor housed in the door. The module does not set B1332 based on a single questionable reading. It waits until the open-circuit condition has been confirmed through repeated checks under the same operating conditions before it lights up the warning and logs the fault.

The freeze frame data captured alongside B1332 is the most useful piece of information stored with this code. It records engine load, RPM, coolant temperature, and vehicle speed at the exact moment the module confirmed the fault. Re-creating those conditions during diagnosis makes it far easier to provoke the failure and verify the fix. The decklid ajar rear door circuit falls under the body electrical group, so it has no direct link to engine performance — the engine will run and drive completely normally in most cases, but the faulty circuit may cause one or more convenience features to stop working.

Common symptoms of B1332

• The check engine or body warning light stays illuminated on the dashboard.
• Engine performance and drivability are unaffected in virtually all vehicles.
• One or more convenience functions — such as power locks, windows, interior or exterior lighting, or wipers — operate intermittently or fail entirely, depending on which circuit shares the affected wiring path.
• The module may log related body electrical codes at the same time, pointing toward a shared component like a fuse or the BCM itself.
• In some cases, no symptom is noticeable at all until the code is pulled during routine service.

What causes B1332?

The open circuit that triggers B1332 most commonly originates at one of these points, listed from most to least frequent:

• A blown fuse that supplies power to the decklid ajar rear door circuit.
• A connector that is unplugged, has a backed-out terminal pin, or is heavily corroded.
• A broken wire somewhere in the decklid or rear door harness, especially near flex points where the door opens and closes.
• An internally open decklid ajar switch or actuator that has failed and no longer completes the circuit.
• Wiring damaged by moisture intrusion in the door jambs or tailgate area.
• A failed relay feeding the affected circuit.
• A faulty body control module itself, which can produce B1332 when its internal driver circuit for the decklid ajar rear door fails.

How to diagnose B1332

1. Plug in an OBD2 scanner and confirm that B1332 is stored in the body control module. Save the freeze frame data — it shows you the exact engine conditions present when the fault was detected.
2. Review any other codes that accompanied B1332. Related body codes often share a common cause such as a single blown fuse or a failed relay. Check manufacturer technical service bulletins for your specific make and model, as some B1332 issues have documented factory fixes or software calibration updates.
3. Visually inspect all wiring and connectors tied to the body electrical system. Look for chafed insulation, broken strands, corrosion buildup, and any connectors that are not fully seated.
4. Perform an end-to-end continuity test on the decklid ajar rear door circuit. Wiggle the harness during the test — intermittent opens will cause the multimeter reading to fluctuate or drop out entirely.
5. Operate the affected function while monitoring live data on the scanner. Watch the switch and motor parameter IDs to see whether the module is sending the expected commands and whether the actuator is responding.
6. Focus attention on flex areas such as door jambs and tailgate hinges, where wires bend every time the door opens. These are the most common locations for stress fractures and broken strands.
7. Clear the code, then complete a full drive cycle including the conditions described in the freeze frame. Verify that B1332 does not return before considering the repair complete.

How to fix B1332

Always start with the cheapest and most common causes before replacing major components. Repair options and their typical parts-and-labor cost ranges are as follows:

• BCM repair or replacement: $300–$900
• Replace the switch or actuator: $120–$450
• Repair wiring or connectors: $80–$250

How much does it cost to fix B1332?

The total depends entirely on which part is responsible for the open circuit. Based on independent shop labor rates in the United States, typical scenarios are: wiring or connector repair at $80–$250, switch or actuator replacement at $120–$450, and BCM repair or replacement at $300–$900. Across all scenarios, the expected cost to fix B1332 falls between $80 and $900. A methodical diagnosis before purchasing any parts is the surest way to avoid spending more than necessary — the most expensive fix is rarely the first place to look.

Can you drive with B1332?

B1332 is classified as a short-severity code, and in most vehicles it is safe to drive. Body electrical faults do not normally affect engine operation, transmission function, or the ability to steer and brake. The practical exceptions are situations where the open circuit involves exterior lighting, wiper motors, or the central locking system — each of which can create a safety concern if it fails at the wrong moment. Until the underlying cause is identified and repaired, be aware of those limitations and address the code at the earliest convenient opportunity.

Related OBD2 codes

• B1300: Power Door Lock Circuit Failure
• B1301: Power Door Lock Circuit Open
• B1302: Accessory Delay Relay Coil Circuit Failure
• B1303: Accessory Delay Relay Coil Circuit Open
• B1304: Accessory Delay Relay Coil Circuit Short To Battery
• B1305: Accessory Delay Relay Coil Circuit Short To Ground