P16DC
Electric Vacuum Pump Relay 2 Stuck On
P16DC is an OBD-II diagnostic trouble code meaning: Electric Vacuum Pump Relay 2 Stuck On. Common causes: faulty vacuum pump relay, short circuit in relay control circuit. Estimated repair cost: $17–56.
Symptoms
- Constant noise from a running vacuum pump
- Reduced braking system efficiency
- Increased fuel consumption
- Check Engine Light Is On
- Vacuum pump overheating
Causes
- Faulty vacuum pump relay
- Short circuit in relay control circuit
- Problems with the engine control unit
- Mechanical jamming of the relay
- Damage to the wiring harness to the relay
How to Fix
- Check the condition of the vacuum pump relay
- Test relay control circuit for short circuit
- Check the serviceability of the vacuum pump
- Inspect the wiring harness for damage
- If necessary, replace the relay or vacuum pump
Related codes
FAQ
What does the P16DC code mean?
P16DC is an OBD-II diagnostic trouble code that indicates: Electric Vacuum Pump Relay 2 Stuck On
What causes a P16DC error code?
The most common causes of P16DC include: Faulty vacuum pump relay; Short circuit in relay control circuit; Problems with the engine control unit; Mechanical jamming of the relay.
How do I fix a P16DC diagnostic trouble code?
To fix P16DC: Check the condition of the vacuum pump relay. Test relay control circuit for short circuit. Check the serviceability of the vacuum pump. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P16DC?
Limited driving only, diagnose soon
How much does it cost to fix P16DC?
The estimated repair cost for P16DC is $17–56. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat