P0232
High SeverityFuel Pump Secondary Circuit High
Fuel System
P0232 — Instant Answer
Fuel Pump Secondary Circuit High
Severity: HIGH SEVERITY
Meaning: Fuel pump circuit voltage is higher than expected.
Safe to drive? NO if CEL is flashing. YES with caution if solid, but repair this week.
Estimated repair cost: $10 - $30
Most common causes:
- 1. Short circuit in fuel pump wiring (35-45% of cases)
- 2. Faulty fuel pump relay stuck on (10-25% of cases)
- 3. ECM driver issue (5-10% of cases)
Symptoms
- ⚠️Check engine light
- ⚠️Possible fuel smell
- ⚠️No driveability issue initially
Related Symptoms
Common Causes
How to Diagnose P0232
- 1Check fuel pump relay
- 2Inspect wiring for shorts
- 3Measure circuit voltage
- 4Replace relay if stuck closed
OEM Procedures for P0232
Engine Controls And Fuel - 1.5L - Diagnostic Information And Procedures (1 Of 2) Found 188 OEM service manual procedures.
Component Fuel Pumps - Fuel Pump Diaphragm Installation
Component Fuel Pumps - Fuel Pump Diaphragm Installation
Component Fuel Pumps - Fuel Pump Diaphragm Installation
Component Fuel Pumps - Fuel Pump Diaphragm Installation
Component Fuel Pumps - Fuel Pump Diaphragm Installation
Component Fuel Pumps - Fuel Pump Diaphragm Installation
Component Fuel Pumps - Fuel Pump Diaphragm Installation
Component Fuel Pumps - Fuel Pump Diaphragm Installation
Showing 8 of 188 procedures
OEM Diagnostic Flowchart
Scroll to load technician if/then branches.
Read live data and freeze frame for P0232 to pinpoint the cause before buying parts.
TopScan
$51.27
DIYers who want phone-based scanning
View on TOPDON
ArtiLink600
$99
DIYers working on ABS/airbag systems
View on TOPDONGot a repair estimate for P0232? Check if the quote is fair before ordering parts.
Turn This Into a Confident Next Step
Verify the likely fault first, then compare a quote before you approve expensive work.
Affiliate disclosure: We may earn a commission at no extra cost to you.
View supporting tool options
OBD2 scanner
Read codes and freeze-frame data before you guess at the fault.
Most diagnostic jobs start with a scan tool and a verified code path.
Shop on Amazon →Battery tester
Check cranking and charging health before replacing expensive parts.
A weak battery can mimic alternator or starter problems.
Shop on Amazon →Multimeter kit
Confirm voltage, continuity, and sensor power with one simple kit.
A meter is the cheapest way to rule out a bad circuit fast.
Shop on Amazon →Related Resources
Repair guides, symptom pages, and wiring diagrams related to P0232.
OEM Manual Evidence
Browse →A L L Diagnostic Trouble Codes ( DTC ) — 2013 Buick Enclave AWD V6-3.6L Service Manual ~ LEMON Manuals LEMON Manuals: Repair Knowledge Reim...
A L L Diagnostic Trouble Codes ( DTC ) — 2013 Buick Enclave FWD V6-3.6L Service Manual ~ LEMON Manuals LEMON Manuals: Repair Knowledge Reim...
A L L Diagnostic Trouble Codes ( DTC ) — 2013 Buick LaCrosse FWD L4-2.4L Service Manual ~ LEMON Manuals LEMON Manuals: Repair Knowledge Rei...
A L L Diagnostic Trouble Codes ( DTC ) — 2013 Buick Regal L4-2.0L Turbo Service Manual ~ LEMON Manuals LEMON Manuals: Repair Knowledge Reim...
Related Symptoms
Browse →Exact Vehicle Hubs
Browse →Open the exact vehicle hub grounded by OEM manual evidence related to P0232.
Open the exact vehicle hub grounded by OEM manual evidence related to P0232.
Open the exact vehicle hub grounded by OEM manual evidence related to P0232.
Open the exact vehicle hub grounded by OEM manual evidence related to P0232.
Related Codes
Frequently Asked Questions
- Is P0232 dangerous?
- A fuel pump that runs continuously can overheat. More concerning, it means the pump cannot be shut off by the ECM in an accident.
- What does fuel pump secondary circuit mean?
- The secondary circuit is the feedback or monitoring circuit that tells the ECM the fuel pump is actually running.
Get the Complete Maintenance Schedule for P0232 drivers
Oil, filters, belts, brakes, and fluid intervals sent to your inbox. Unsubscribe anytime.
Not sure you want to DIY? Compare local shop pricing first.
Author & Review
Written by AllOEMManuals Editorial Team. Reviewed by ASE-certified technicians and updated with factory-reference checks for fitment-sensitive steps.
This guide was drafted with AI assistance and reviewed for accuracy by a human editor.
Last updated: 2026-05-07