Broken or chafed wire in the PACM power or ground circuit; Corroded or loose electrical connector at the PACM or in-line harness; Failed PACM internal open circuit; Blown fuse or faulty relay supplying power to the PACM; Damage to the wiring harness from road debris, rodents, or improper previous repairs; Poor ground connection for the PACM circuit

DTC codes / P0Dxx · Hybrid propulsion / P0DED

P0DEDPedestrian Alert Control Module Circuit/Open

Q: What does code P0DED mean?

Pedestrian Alert Control Module Circuit/Open. P0DED indicates that the Pedestrian Alert Control Module (PACM) has detected an open circuit in its wiring or internal connection, meaning the module cannot reliably perform its function of generating audible warnings for pedestrians. The computer sets this code when it sees an unexpected lack of continuity on the circuit that powers or communicates with the PACM, often due to a broken wire, poor connector, or failed module.

P0DED indicates that the Pedestrian Alert Control Module (PACM) has detected an open circuit in its wiring or internal connection, meaning the module cannot reliably perform its function of generating audible warnings for pedestrians. The computer sets this code when it sees an unexpected lack of continuity on the circuit that powers or communicates with the PACM, often due to a broken wire, poor connector, or failed module.

SystemPowertrain

Code typeGeneric (all makes)

SeverityLow

Fix difficultyIntermediate

AreaHybrid propulsion

Symptoms you may notice

Audible pedestrian alert sound may not emit from the speaker, or may be intermittent
A warning light or message on the dashboard indicating a fault with the pedestrian alert system
Often no symptoms besides the warning light, as the vehicle otherwise drives normally
In some vehicles, related driver-assist features may be disabled or show a fault
Intermittent operation of the pedestrian alert sound when hitting bumps or during wet weather

Common causes, most likely first

Broken or chafed wire in the PACM power or ground circuit
Corroded or loose electrical connector at the PACM or in-line harness
Failed PACM internal open circuit
Blown fuse or faulty relay supplying power to the PACM
Damage to the wiring harness from road debris, rodents, or improper previous repairs
Poor ground connection for the PACM circuit

How to diagnose and fix it

Verify the code with a scan tool and check for any related TSBs or software updates for the PACM
Inspect the PACM fuse and relay, and replace if blown or faulty
Visually inspect the PACM connector and harness for corrosion, loose pins, or damage
Perform a continuity test on the power and ground wires from the PACM to the fuse box and ground point
Check the PACM ground connection for cleanliness and tightness
If wiring and connections are good, test the PACM by substituting a known-good unit or performing a functional test
Clear the code and verify the repair by cycling the ignition and confirming the pedestrian alert system operates correctly

Common Oversights in P0DED Diagnosis

A loose or corroded ground connection at the PACM is frequently overlooked because it can mimic a failed module, so always verify ground integrity before replacing parts.
The PACM may share power or ground with other systems, so a fault in a seemingly unrelated circuit can cause this code to set; check for other codes that might indicate a shared circuit issue.
In some vehicles, the pedestrian alert sound is generated through the audio system speakers, so a fault in the audio system can trigger P0DED even if the PACM itself is fine.
After any repair, the PACM may require a recalibration or relearn procedure using a scan tool, which is often missed and leads to a repeat code.
Intermittent opens can be caused by wire chafing inside a harness loom that only shows up when the vehicle is moving or vibrating, so a wiggle test while monitoring live data is essential.

Can I keep driving with P0DED?

The vehicle remains safe to drive because the pedestrian alert system is an audible warning aid and does not affect braking, steering, or powertrain operation. However, you should be extra cautious in areas with pedestrians, especially at low speeds, and have the fault repaired promptly to maintain the vehicle's safety features.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.