P1616
Engine Control Relay Circuit Malfunction
P1616 is an OBD-II diagnostic trouble code meaning: Engine Control Relay Circuit Malfunction. Common causes: faulty engine control relay, open or short circuit in the circuit. Estimated repair cost: $6–28.
Symptoms
- Engine won't start
- The engine stalls while driving
- Check Engine Light Is On
- No power to the fuel pump
- Unstable engine operation
Causes
- Faulty engine control relay
- Open or short circuit in the circuit
- Oxidized or corroded contacts
- Problems with the engine control unit (ECU)
- Poor circuit grounding
How to Fix
- Check voltage at engine control relay
- Inspect and clean relay contacts and connectors
- Check the integrity of the wiring in the relay circuit
- Replace engine control relay if necessary
- Check and replace fuses if necessary
Related codes
Error P1616 by Vehicle Brand
FAQ
What does the P1616 code mean?
P1616 is an OBD-II diagnostic trouble code that indicates: Engine Control Relay Circuit Malfunction
What causes a P1616 error code?
The most common causes of P1616 include: Faulty engine control relay; Open or short circuit in the circuit; Oxidized or corroded contacts; Problems with the engine control unit (ECU).
How do I fix a P1616 diagnostic trouble code?
To fix P1616: Check voltage at engine control relay. Inspect and clean relay contacts and connectors. Check the integrity of the wiring in the relay circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1616?
Do not drive — repair immediately
How much does it cost to fix P1616?
The estimated repair cost for P1616 is $6–28. Actual cost depends on your vehicle, location, and labor rates.
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