P0D57

What it means

P0D57 is the generic SAE J2012 code for Proximity Detection Circuit A Range/Performance. The control unit saw a signal on the proximity detection circuit that was present but outside the expected range, or that did not behave plausibly. On most vehicles this concerns the plug-in charging connection (plug or cable detection), but which circuit is 'A' and which module sets the code depends on the model.

Symptoms

• Warning light on, which may be a general fault or a charging or hybrid system warning
• Charging will not start, stops early or is intermittent
• Charge port or connector latch or lock behaves oddly
• Vehicle reports that the charge cable is connected when it is not, or the reverse
• Reduced or limited charging power
• Possible drive inhibit while the vehicle thinks it is plugged in

Possible causes

• Dirty, damaged, corroded or bent pins or contacts in the charge inlet or charge cable connectorlikely
• Wiring fault in the proximity circuit between the inlet and the control module (high resistance, chafing, short to ground or voltage)likely
• Faulty or out-of-spec charging cable or portable charging unit that gives an incorrect proximity signallikely
• Damaged or misadjusted charge port latch or plug detection switch or sensorpossible
• Water ingress or contamination in the charge inlet or its connectorpossible
• Fault in the charging control module or on-board charger, or a software issue where the manufacturer has a known updaterare

How to diagnose

1. Read all stored and pending codes and the freeze frame data. Note whether the vehicle was plugged in or charging and check for related charging or communication codes.
2. Visually inspect the charge inlet and the cable connector for damage, debris, moisture, burnt marks, corrosion and bent pins.
3. Try a different known-good charging cable or charging point, and see whether the code or fault behaviour follows the cable.
4. Check that the latch, flap and plug detection mechanism move freely and that the plug seats fully.
5. Inspect the wiring and connectors from the inlet to the control module for chafing, pin tension, water and previous repairs.
6. Using the manufacturer's wiring diagram, check the proximity circuit for supply, ground, resistance and signal values against the specified range. The correct values and pin locations depend on the model.
7. Check live data for the proximity or plug status signal while plugging and unplugging, and look for dropouts or implausible values.
8. Check for technical bulletins or software updates for the vehicle, then clear the code and retest by charging.

How to fix

• Clean or replace the contaminated, corroded or damaged charge inlet or connector pins.
• Repair or replace damaged wiring or connectors in the proximity circuit.
• Replace a faulty charging cable or charging unit.
• Repair or replace the latch, plug detection switch or inlet assembly if it is out of range or sticking.
• Dry out and seal any water ingress, and fix the source of the leak.
• Update the control module software if an outdated calibration is a known cause for the vehicle, or replace the module if testing proves it faulty.

Can I keep driving?

Nearby codes

• P0D56GenericProximity Detection Circuit A
• P0D58GenericProximity Detection Circuit A Low