Description
OBD-II Trouble Code Description for P0232 Infiniti
Fuel Pump Secondary Circuit High
What does this mean?
OBD2 Code P0232 Infiniti 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 Infiniti may set.
Symptoms
Possible sumptoms of OBD code P0232 Infiniti
Symptoms of a P0232 Infiniti 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 Infiniti
Potential causes of a P0232 Infiniti 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 Infiniti 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 Infiniti:
,2013 Infiniti M35h GT,2013 Infiniti JX,2013 Infiniti FX,2011 Infiniti QX,2011 Infiniti M35h,2011 Infiniti M,2011 Infiniti JX Concept,2011 Infiniti IPL G Coupe,2011 Infiniti EX30d,2009 Infiniti G37,2009 Infiniti FX50,2009 Infiniti FX37,2009 Infiniti FX35,2009 Infiniti Essence Concept,2009 Infiniti EX37,2008 Infiniti QX56,2008 Infiniti M45x,2008 Infiniti M45s,2008 Infiniti G37 Coupe,2008 Infiniti EX35,2007 Infiniti G35 Sedan,2007 Infiniti EX Concept,2006 Infiniti QX56,2006 Infiniti Q45,2006 Infiniti M45,2006 Infiniti M35x,2006 Infiniti M35,2006 Infiniti FX45,2005 Infiniti Q45,2005 Infiniti G35,2005 Infiniti FX45,2004 Infiniti QX56,2004 Infiniti M45 Concept,2004 Infiniti I35,2003 Infiniti QX4,2003 Infiniti Q45,2003 Infiniti M45,2003 Infiniti I35,2003 Infiniti G35,2003 Infiniti FX45,2003 Infiniti FX35
Note:
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