P0616
Starter Relay A Circuit Low
P0616 is an OBD-II diagnostic trouble code meaning: Starter Relay A Circuit Low. Common causes: discharged or weak battery, oxidation of starter relay connector contacts. Estimated repair cost: $6–111.
Symptoms
- The Check Engine light comes on
- Difficulty starting, especially in cold weather
- Slow starter rotation
- Unstable startup: sometimes normal, sometimes not
- Relay clicks without starter turning
Causes
- Discharged or weak battery
- Oxidation of starter relay connector contacts
- Poor grounding of the starter or ECU
- Increased resistance in the relay power circuit
- Partially damaged starter circuit wiring
How to Fix
- Check the battery voltage (normal 12.4–12.6 V at rest)
- Check the voltage when cranking with the starter (not lower than 10 V)
- Clean and tighten battery terminals and relay contacts
- Check starter ground circuit resistance
- Measure the voltage drop across the starter circuit wires
- Replace the battery if the capacity is insufficient
Related codes
Error P0616 by Vehicle Brand
FAQ
What does the P0616 code mean?
P0616 is an OBD-II diagnostic trouble code that indicates: Starter Relay A Circuit Low
What causes a P0616 error code?
The most common causes of P0616 include: Discharged or weak battery; Oxidation of starter relay connector contacts; Poor grounding of the starter or ECU; Increased resistance in the relay power circuit.
How do I fix a P0616 diagnostic trouble code?
To fix P0616: Check the battery voltage (normal 12.4–12.6 V at rest). Check the voltage when cranking with the starter (not lower than 10 V). Clean and tighten battery terminals and relay contacts. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0616?
Yes, but get it checked soon
How much does it cost to fix P0616?
The estimated repair cost for P0616 is $6–111. Actual cost depends on your vehicle, location, and labor rates.
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