The P0616: Starter Relay Circuit Low code refers to a problem where the vehicle detects low voltage in the starter relay circuit. This can be caused by a faulty starter relay, low voltage in the circuit, or wiring issues that affect the circuit’s ability to function properly.
P0616 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P0616: Starter Relay Circuit Low |
| Is it serious? | Yes, as it can prevent the vehicle from starting. |
| Possible causes | – Faulty starter relay – Low voltage in circuit – Wiring issue |
| How to diagnose? | – Test starter relay for voltage – Inspect wiring and connectors – Replace starter relay if necessary |
P0616 Meaning
The P0616 code indicates that there is low voltage detected in the starter relay circuit, which is responsible for engaging the starter motor when the vehicle is started. This issue can prevent the engine from starting, leading to no-crank conditions.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for any additional codes that may provide more insight into the starter system issue. | OBD-II Scanner |
| Test the Starter Relay for Voltage | Use a multimeter to measure the voltage at the starter relay to ensure it is receiving adequate power. | Multimeter |
| Inspect Wiring and Connectors | Inspect the wiring and connectors related to the starter relay for signs of damage, loose connections, or corrosion. | Flashlight, Multimeter |
| Replace the Starter Relay if Necessary | If the starter relay is not functioning or has low voltage, replace it with a new one to restore proper function. | Replacement Starter Relay, Tools |
| Clear the Code and Test | After replacing or repairing the starter relay, clear the code using an OBD-II scanner and test the vehicle to ensure proper starting operation. | OBD-II Scanner, Vehicle Manual |
Free PDF: How to choose OBD2 scanner
I’ve made you a free PDF to choose the OBD2 scanner in 5 minutes.
✅ Which OBD2 scanner is best?
✅ Which type should you get (DIY, Pro, Hobby)
✅ What is the best scanner for the exact brand/feature (e.g best for BMW)
✅ How to get a Bi-Directional tool for as cheap as $40
✅ Discount coupons for scanners
PDF is 100% free and it is designed to help you pick a scanner in less than a few minutes! Not a boring 50-page guide.
Just tell me where to send it.
