P0232 OBD-II Trouble Code: Fuel Pump Secondary Circuit High

Our certified mechanics come to you · 12-month, 12,000-mile warranty

SCHEDULE P0232 DIAGNOSTIC Get a fair and transparent estimate upfront
Red-stars EXCELLENT RATING ON

Cost of diagnosing the P0232 code

P0232 is a diagnostic trouble code (DTC) for "Fuel Pump Secondary Circuit High". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$20.00
Toyota$20.00
BMW$20.00
SCHEDULE P0232 DIAGNOSTIC Get a fair and transparent estimate upfront

P0232 code definition

Fuel Pump Secondary Circuit High

What the P0232 code means

P0232 is a generic OBD-II code that is triggered when the engine control module (ECM) detects that the secondary circuit to the fuel pump has a high voltage when the fuel pump relay is turned off.

What causes the P0232 code?

  • The engine control module (ECM) monitored the secondary fuel pump circuit voltage from the fuel pump relay when the relay is turned off and there was voltage getting to the fuel pump to keep running the pump even after the key is turned off

  • The fuel pump relay is stuck on, keeping power supplied to the fuel pump even after the ignition has been turned off

  • The fuel pump secondary power circuit has a short to battery voltage

What are the symptoms of the P0232 code?

  • The Check Engine Light will be illuminated and the P0232 code is set in ECM memory

  • The fuel pump will continue to run even after the key is turned off, draining the battery

  • The vehicle will fail to start after the battery has been drained, unless jump started

How does a mechanic diagnose the P0232 code?

  • Scans codes and documents the freeze frame data in order to verify the problem

  • Clears the DTC codes to verify whether the concern comes back

  • Tests to see if voltage is getting to the fuel pump secondary circuit through the IFS and relay after the engine has been turned off

  • Lightly taps the relay, if power is still being supplied through the relay, to see if power turns off, which would indicate that the relay is sticking and needs replaced

  • Check for an internal short in the ECM if it continues to supply power to the relay after the ignition has been turned off

Common mistakes when diagnosing the P0232 code

Follow these simple guidelines to prevent misdiagnosis:

  • Look for a stuck fuel pump relay by lightly tapping it to see if it is sticking, while monitoring to see if the voltage turns off to the secondary circuit

  • Check the electrical connections at the fuel pump relay for a shorted connector wiring

How serious is the P0232 code?

  • If the relay is stuck in the On position, the fuel pump secondary circuit can continue to run the fuel pump until the battery dies

  • The continued short will not only kill the battery, but will put excessive strain on the fuel pump and wiring to the pump, causing additional failures of components

What repairs can fix the P0232 code?

  • Replacing the fuel pump relay if it is making a connection on the secondary side of the relay after the ignition is turned off

  • Repairing the fuel pump relay connector if shorted to power on the secondary side

  • Replacing the battery after the relay is replaced, if it will not recharge

Additional comments for consideration regarding the P0232 code

Code P0232 is triggered when voltage in the fuel pump secondary circuit is shorted to vehicle power through the relay. The ECM monitors this voltage to see if it stays on after the key is turned off. The most common failure is a relay stuck to the On position internally.

Need help with a P0232 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

trouble codes
P0232
Check Engine Light

Fast and easy Check Engine Light is on Inspection service at your home or office.

SCHEDULE P0232 DIAGNOSTIC
Get a fair and transparent estimate upfront

Recent Check Engine Light is on Inspection reviews

Excellent Rating


YourMechanic Check Engine Light is on Inspection Service

Average Rating

4.8/5

Number of Reviews

4,869

Rating Summary
4,482
187
48
28
124
4,482
187
48
28
124

Peter

41 years of experience
1251 reviews
Peter
41 years of experience
Chevrolet Cruze - Check Engine Light is on Inspection - Phoenix, Arizona
I requested Your Mechanic’s services due to my check engine light coming on. Peter showed up early and was able to diagnose and fix the issue in a timely manner. Peter was also very pleasant and I was charged a fair price for the repair. I’ve also had Peter fix my car on two previous occasions and I was very pleased with his services those times as well. I would definitely recommend him to fix your car as well!

Arturo

25 years of experience
64 reviews
Arturo
25 years of experience
Toyota Matrix - Check Engine Light is on - San Diego, California
Absolutely Excellent. He can answer any inquiries I had and very knowledgeable. Also very helpful and genuine. In addition he gave good recommendations on my car care. I am very glad I found "your mechanic".

Albert

13 years of experience
23 reviews
Albert
13 years of experience
Ford Fusion - Check Engine Light is on - Riverside, California
Albert showed up early, was very professional and informative, would definitely recommend to family and friends

William

15 years of experience
9 reviews
William
15 years of experience
Ford Crown Victoria - Check Engine Light is on - Denver, Colorado
William was such a great help on helping me not only diagnose my vehicle but also helped me better understand my own Car! Such a great experience for my first time using Your Mechanic

More related articles

P0245 OBD-II Trouble Code: Turbocharger Wastegate Solenoid A Circuit Low
P0245 P0245 code definition Turbocharger Wastegate Solenoid A Circuit Low What the P0245 code means P0245 is an OBD-II generic code that the engine control module (ECM) detected the turbocharger wastegate solenoid A input circuit low is below specifications, indicating...
P0841 OBD-II Trouble Code: Transmission Fluid Pressure Sensor/Switch A Circuit Range/Performance
What the P0841 code means The P0841 code indicates that the Powertrain Control Module (PCM) has discovered an abnormality in the transmission...
P0573 OBD-II Trouble Code: Cruise Control/Brake Switch A Circuit High
P0573 code means there is an electrical malfunction affecting your vehicle’s brake switch “A” often due too a faulty cruise control switch.

Related questions

Check engine light on

Hi there. Since the Check Engine Light is on then the computer needs to be scanned for codes first. I usually do this before going any further with it. This can be caused by any number of sensors on the...

Last night I was driving home and I heard this knocking noise, a minute later the noise went away and my check engine light came on.

Hi there. The noise you heard could have been the engine knocking due to a lack of engine oil. If the brake pedal is pressed and the oil light comes on, then the oil level could be low causing the...

Car cranks over but won't start - 2004 Nissan Sentra

If the fuel pump is not "whirring" momentarily when you turn the key "on", either the pump is not receiving power or it's non-functional. You might try probing the fuel pump harness for 12 volts at moment key is turned...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1-800-701-6230 · hi@yourmechanic.com