P0230

Fuel Pump Primary Circuit

Fuel delivery Generic OBD-II High

What it means

P0230 means the ECM has detected a fault in the primary (control) circuit that switches the fuel pump on and off. Because this circuit powers fuel delivery, a fault can cause hard starting, stalling, or a complete no-start. The usual culprits are the pump relay, the control wiring, or the pump driver module.

High

Can I keep driving? Risky — a fault in the fuel pump control circuit can cause stalling or a no-start, so treat this as a leave-it-parked issue until diagnosed.

Real-world scan data

Seen in

1,341

scans in the past year

Found in

0.2%

of scans

0.4%

of scans that found faults

Appears alongside · share of P0230 scans

P0683in 45.2% of scans

P0110in 31.6% of scans

P0480in 30.4% of scans

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

Common symptoms

What you'll notice

Engine cranks but will not start
Engine stalls or dies while driving
Hard starting or intermittent no-start
Reduced power or hesitation
Check-engine light on

Common causes

Most likely first

Failed fuel pump relayLikely
Open, shorted, or chafed wiring in the pump control (primary) circuitCommon
Corroded or loose connectors at the relay, pump, or driver moduleCommon
Faulty fuel pump driver module / ECM pump driverLess often
Failed fuel pump (secondary — the primary circuit fault comes first)Less often

How to diagnose & fix

Work through it in order

Scan and read freeze-frame data, then confirm whether the pump primes for two seconds at key-on.
Check the fuel pump fuse and relay; swap-test the relay with a known-good one.
Inspect the control-circuit wiring and connectors for opens, shorts, and corrosion.
Test for voltage and ground at the pump driver module and pump connector during cranking.
If the circuit and driver check out, test the pump itself. Clear and re-test.

FAQ

Quick answers

Is it safe to drive with P0230?+

No — a control-circuit fault can leave you stranded when the pump cuts out. Have it diagnosed before driving.

Can I just clear P0230?+

Clearing it won't fix the circuit fault; the code returns and the car may not start until the relay, wiring, or driver is repaired.

Read & clear P0230 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX