Description
OBD-II Trouble Code Description for P0232 Nissan
Fuel Pump Secondary Circuit High
What does this mean?
OBD2 Code P0232 Nissan definition:
The fuel pump is powered by the fuel pump relay. When the PCM (powertrain control module) activates the fuel pump relay, voltage is supplied to the fuel pump and it pressurizes the fuel system. Some vehicles have a feedback on the fuel pump supply circuit. This is simply a circuit spliced into the voltage feed to the fuel pump. The splice is usually located close to the PCM. The PCM monitors this feedback circuit to ensure that there is proper voltage being sent to the fuel pump. As it activates the fuel pump relay, it expects to see battery voltage on the feedback circuit. If the PCM sees an unexpected high voltage when the fuel pump isn’t activated, P0232 Nissan may set.
Symptoms
Possible sumptoms of OBD code P0232 Nissan
Symptoms of a P0232 Nissan DTC may include: MIL (malfunction indicator lamp) illumination Fuel pump runs with key off Small amount of voltage present on FP (fuel pump) voltage supply circuit due to short
Causes
Possible causes of OBD code P0232 Nissan
Potential causes of a P0232 Nissan code include: Bad FP relay Short to voltage on FP voltage supply circuit or feedback circuit Short to ground on PCM FP relay control circuit PCM FP relay control driver shorted to ground internally
Possible Solutions
It is possible with a P0232 Nissan for the fuel pump to be running continuously, even with the ignition off. If that’s the case and you can hear the fuel pump running, you may be able to disregard some of the following checks. Turn the KOEO (key on engine off) and wait for a few seconds. This allows the PCM to complete it’s fuel pump pre-cycle. Now, using your scan tool (if you have one) observe the FP VOLTAGE FEEDBACK reading in the datastream. This reading indicates what kind of voltage the fuel pump is receiving. If you don’t have access to a scan tool, use a voltmeter to read the FP voltage at the fuel tank. If your reading shows any voltage at all present to the fuel pump with KOEO (or if you can hear the pump running), remove the FP relay. If the voltage remains, or the fuel pump continues to run, then there is a short to voltage on the FP voltage supply circuit or on the feedback circuit. Repair as necessary. If the voltage disappears (or the pump quits running) with the FP relay removed then try replacing the relay with a spare one. Upon reinstalling the spare relay, if the voltage disappears, the relay was faulty due to a short. If, though, after replacing the relay voltage is still present, suspect that the PCM FP relay control circuit is shorted to ground. Check for a short to ground on the PCM FP relay control (ground driver) circuit by removing the FP relay and ohm between a good ground and the PCM FP relay control. There should be no continuity to ground with KOEO (after the FP pre-cycle is completed). If there is continuity to ground the wire is shorted. Find the short to ground and repair as necessary. If you can find no physical short, It may be necessary to snip the FP relay control wire close to the PCM connector where it will be easy to repair and check for continuity to ground with KOEO coming OUT of the PCM. If there is no continuity the wire is shorted in the harness. But if continuity exists, the driver may be internally shorted to ground and the PCM may require replacement.
The OBD2 Code Information Be Applicable For Nissan:
2013 Nissan Pathfinder,2013 Nissan Murano,2013 Nissan Juke Nismo,2013 Nissan GT-R,2013 Nissan Altima Sedan,2013 Nissan Almera,2013 Nissan 370Z,2012 Nissan Tiida,2012 Nissan Sunny,2012 Nissan Qashqai,2012 Nissan Murano,2012 Nissan Micra ELLE,2012 Nissan Micra DIG-S,2012 Nissan Maxima,2012 Nissan Juke Shiro,2012 Nissan GT-R,2012 Nissan Extrem Concept,2011 Nissan X-Trail,2011 Nissan Rogue,2011 Nissan Quest,2011 Nissan Pivo 3 Concept,2011 Nissan Patrol,2011 Nissan Murano,2011 Nissan Micra,2011 Nissan LEAF,2011 Nissan Juke,2011 Nissan GT-R,2011 Nissan 370Z,2010 Nissan Qashqai,2010 Nissan Pathfinder,2010 Nissan Navara,2010 Nissan NV200,2010 Nissan GT-R SpecV,2010 Nissan Cube,2010 Nissan Altima Sedan,2010 Nissan Altima Coupe,2010 Nissan 370Z Roadster,2009 Nissan Xterra,2009 Nissan Pixo,2009 Nissan Note,2009 Nissan Murano,2009 Nissan Maxima,2009 Nissan Frontier,2009 Nissan 370Z,2008 Nissan X-Trail,2008 Nissan Rogue,2008 Nissan Pathfinder,2008 Nissan GT-R,2007 Nissan Sentra SE-R,2007 Nissan Mixim,2007 Nissan Altima,2006 Nissan Urge Concept,2006 Nissan Note,2006 Nissan 350Z,2005 Nissan Zaroot Concept,2005 Nissan Xterra,2005 Nissan Terrano,2005 Nissan Sport Concept,2005 Nissan Primera,2005 Nissan Pivo Concept,2005 Nissan Pickup,2005 Nissan Patrol,2005 Nissan Pathfinder,2005 Nissan Micra,2005 Nissan Altima,2004 Nissan Titan,2004 Nissan Tiida
Note:
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