P0D17 code meaning
Battery Charging System A High Voltage Interlock Circuit Low
Powertrain system Generic code P0Dxx codes Check engine light
What P0D17 means
P0D17 means the sensed voltage of the charging HVIL loop is too low. GM documents the check for the Chevrolet Volt (2011, 2014) and the Cadillac ELR: while the module sources 5 V into the loop, a sensed value under 30 % of the reference in two samples out of two at 12.5 ms sets the code as Type A, with the MIL on after one trip. A low reading suggests a path to ground or leakage somewhere in the loop wiring, or a fault in the measuring stage of the module. Because the test only runs with the source switched on, it typically shows up around charging. The interlock of battery and drive has its own code, P0A0C. P0D18 is the high counterpart, P0D15 the open loop. With an implausible loop the car refuses to charge.
P0D17 at a glance
- Check engine lightYes, usually on
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.5 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0D17
- Malfunction indicator lamp after one trip (GM Type A)
- Charging refused
Common causes of P0D17
- Most likelyInterlock wire chafed and touching ground
- PossibleMoisture or dirt in an interlock connector causing leakage
- Less likelyFault in the interlock source or measuring circuit of the control module
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Bcs a hv interlockWiring harnessHybrid control module
What each part of P0D17 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 17 | The exact fault in that area. |
What to do next
- Note P0D17 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P0D17
What does P0D17 mean?
P0D17 means "Battery Charging System A High Voltage Interlock Circuit Low". P0D17 means the sensed voltage of the charging HVIL loop is too low. It is a generic code, so it means the same on every make.
Is it safe to drive with P0D17?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P0D17 fail an emissions test?
P0D17 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is P0D17 to fix?
Difficulty: medium. A typical repair takes 0.5 to 4 hours of work. This is a job for a workshop.
Will P0D17 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.