P0512Starting System

Starter Request Circuit

P0512 means the module detected a problem in the starter request circuit, the signal that tells the system to crank the engine. It can be wiring, the ignition switch, or a relay.

🚗 If the engine starts, it will run. But a fault here can cause hard or no starts. Address it soon.

MEDIUM

severity

🎯 Top Causes, Ranked by Likelihood

#1Faulty ignition switch or start button$50-$400

35%

The start signal is not delivered correctly to the module.

#2Wiring or connector fault$40-$300

30%

Broken or shorted wiring in the starter request circuit.

#3Faulty starter relay$15-$120

20%

A failing relay disrupts the crank request.

#4Control module fault$200-$900

15%

Rarely, the module handling the start request fails.

🩺 Common Symptoms

Hard starting or no start
Intermittent cranking
Check engine light
Starter engages at wrong time

💰 Repair Cost: DIY vs Shop

DIY Cost

$15-$300

Shop Cost

$100-$600

📋 Free OBD2 Code Cheat Sheet

The 50 most common codes with likely cause and DIY fix cost. Sent once, no spam.

🔧 How to Diagnose P0512

1Check the starter relay and its circuit

2Inspect the ignition switch or start button signal

3Test the wiring in the starter request circuit

4Repair or replace the faulty component

❓ Frequently Asked Questions

Can I drive with P0512?

If it starts, yes. But it may fail to crank later, leaving you stranded, so fix it soon.

How much to fix P0512?

A relay is cheap; an ignition switch or wiring repair runs $100-$600.

Is P0512 serious?

It can leave you unable to start the car. Medium severity, worth addressing promptly.

🔗 Related Codes

P0615P0616P0617P0513