P0D58

What it means

P0D58 means the control unit monitoring a proximity detection circuit (labelled 'A') has seen a signal voltage lower than expected. On plug-in hybrid and electric vehicles this is normally the charge inlet or connector proximity line, which tells the car that a charging cable is plugged in and what its rating is. Which circuit is 'A' and the exact voltage limits depend on the make and model, so check the manufacturer's data.

Symptoms

• Charging will not start or stops soon after starting
• Charge port light or dashboard charging warning shows a fault or behaves oddly
• Warning light on, such as a hybrid system or powertrain fault warning
• Vehicle does not detect that a charging cable is connected, or reports the wrong connection status
• Charge port locking motor or latch behaves inconsistently
• Charging works with one cable or charge point but not another

Possible causes

• Damaged, wet or contaminated charge inlet, with moisture or debris pulling the proximity line lowlikely
• Proximity signal wire shorted to ground or chafed against bodywork between the charge inlet and the control unitlikely
• Corroded, bent or pushed-back terminals in the charge inlet or control unit connectorlikely
• Faulty charging cable or connector with incorrect or damaged proximity resistorpossible
• Faulty charge inlet assembly, including its internal proximity sensing or switchpossible
• Fault inside the charging or vehicle control unit's proximity input, or an outdated calibration where the manufacturer lists one as a known causerare

How to diagnose

1. Read all stored and pending codes and the freeze frame data, noting whether the fault is present now or intermittent and whether other charging or hybrid system codes are stored.
2. Look at the charge inlet for water, dirt, corrosion, burn marks, bent pins or a damaged flap and seal, and try a different known-good charging cable and charge point.
3. Inspect the wiring and connectors between the charge inlet and the control unit for chafing, crushed sections, water ingress, corrosion and loose terminals, leaving high-voltage orange cabling to qualified technicians.
4. Check live data for the proximity signal status or voltage with the cable plugged in and unplugged, and compare it with the manufacturer's specification.
5. Following the manufacturer's procedure and only if trained in high-voltage safety, isolate the system and test the proximity wire for short to ground, continuity and resistance.
6. Check the supply, earth and connector condition at the control unit that monitors the circuit, using the wiring diagram for the model.
7. Test the charge inlet's proximity components against the manufacturer's values, then check for any published software updates or technical bulletins for this code on the model.

How to fix

• Clean and dry the charge inlet and fit a new seal or flap if it is damaged, once the cause of moisture or contamination is dealt with.
• Repair or replace the damaged proximity wiring and secure it clear of sharp edges and heat.
• Repair or replace corroded or loose connector terminals, and fit new connector seals where needed.
• Replace a faulty charging cable or connector if it fails testing.
• Replace the charge inlet assembly if its proximity circuit is out of specification.
• Replace or update the relevant control unit only after the wiring and inlet are proven good, and only as the manufacturer specifies.

Can I keep driving?

Nearby codes

• P0D57GenericProximity Detection Circuit A Range/Performance
• P0D59GenericProximity Detection Circuit A High