P1610 — Voltage Supply Missing Or Relay Module K40

What Does P1610 Mean?

P1610 is a manufacturer-specific diagnostic trouble code: Voltage Supply Missing Or Relay Module K40. This code applies to MERCEDES, BUICK, CADILLAC, CHEVY, GM vehicles. Unlike generic OBD-II codes, manufacturer-specific codes are defined by the vehicle maker and may only apply to certain makes and models.

Symptoms of P1610

⚠️ Check Engine Light (MIL) illuminated
⚠️ Voltage Supply Missing Or Relay Module K40 not functioning as expected
⚠️ Related system may be in fail-safe mode
⚠️ Reduced engine performance

Common Causes

🔍 Faulty Voltage Supply Missing Or Relay Module K40
🔍 Wiring or connector issue in Voltage Supply Missing Or Relay Module K40 circuit
🔍 Related mechanical or electrical fault
🔍 ECM/PCM issue (rare)

Frequently Asked Questions

What does P1610 mean?

P1610 indicates: Voltage Supply Missing Or Relay Module K40. The vehicle's computer has detected that the Voltage Supply Missing Or Relay Module K40 is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P1610?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P1610 for extended periods may cause additional problems.

How much does it cost to fix P1610?

Repair costs for P1610 typically range from $80 to $300, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Inspect Voltage Supply Missing Or Relay Module K40 and related wiring
🔧 Replace faulty Voltage Supply Missing Or Relay Module K40

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

P1610: Voltage Supply Missing Or Relay Module K40