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DTC codes / P0Dxx · Hybrid propulsion / P0D1F

P0D1FControl Module Date/Time Synchronization Error

P0D1F indicates that a control module has detected a mismatch or failure in its internal date and time synchronization, meaning the module's clock is not aligning with the expected network time or with other modules on the vehicle. The computer sets this code when it cannot confirm that its timestamp is accurate relative to the synchronized time reference used for event logging and coordinated operation.

SystemPowertrain
Code typeGeneric (all makes)
SeverityLow
Fix difficultyIntermediate
AreaHybrid propulsion

Symptoms you may notice

  • Often no symptoms besides the warning light, as the fault may only affect time-stamping of diagnostic events.
  • Incorrect timestamps on stored freeze-frame data or event logs, which can complicate later diagnostics.
  • Intermittent operation of features that rely on time synchronization, such as scheduled charging or timed climate control.
  • Multiple unrelated warning lights or communication codes if the time mismatch disrupts coordinated module operation.
  • A clock display that resets or shows the wrong time after each ignition cycle.

Common causes, most likely first

  1. A weak or failing 12-volt battery that causes voltage drops and resets the module's internal clock.
  2. Corroded, loose, or damaged wiring in the module's power or ground circuits, leading to intermittent power loss.
  3. A software glitch or outdated calibration in the affected control module.
  4. Failure of the module's internal real-time clock circuit or backup power source.
  5. Communication network issues, such as a CAN bus fault, that prevent proper time synchronization between modules.
  6. A defective control module that cannot maintain or synchronize its timekeeping function.

How to diagnose and fix it

  1. Verify battery health and charging system output, as low voltage is a leading cause of time synchronization errors.
  2. Inspect and clean the battery terminals and the affected module's power and ground connections for corrosion or looseness.
  3. Scan all modules for related communication codes and check for technical service bulletins or software updates for the module.
  4. Perform a battery reset or module relearn procedure according to the manufacturer's instructions to reestablish time synchronization.
  5. If the fault persists, test the module's internal backup power circuit and replace the module if the clock cannot hold time.
  6. Check for and repair any CAN bus wiring faults that could disrupt time synchronization messages between modules.
  7. After repairs, clear the code and verify that it does not return after a complete drive cycle with multiple key cycles.

Time Sync Errors Aren't Always Module Failure

  • A marginal battery that still starts the engine can cause this code because the voltage dip during cranking resets the module's clock without leaving other symptoms.
  • This code often appears after a battery replacement or jump-start if the time synchronization relearn procedure was not performed.
  • Technicians sometimes replace the control module unnecessarily when the real fault is a poor ground connection that intermittently interrupts power to the clock circuit.
  • The code can be set by a communication network issue rather than a faulty clock, so always check for CAN bus faults before condemning the module.
  • Some vehicles require a scan tool to manually set the time in a replacement module, and skipping this step will immediately reset the code.

Can I keep driving with P0D1F?

The vehicle is generally safe to drive because this fault rarely affects engine operation or safety systems, but you should avoid relying on time-dependent features and address the code promptly to prevent diagnostic confusion from inaccurate timestamps.

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.

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