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P1000 and P0174
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<blockquote data-quote="Vinnie_B" data-source="post: 16777864" data-attributes="member: 201678"><p>P0174 - System to Lean (Bank 2)</p><p></p><p>The Adaptive Fuel Strategy continuously monitors the fuel delivery hardware. The test fails when the adaptive fuel tables reach a rich calibrated limit. </p><p></p><p><span style="color: rgb(184, 49, 47)">Check the following:</span></p><p></p><p>Air Measurement System</p><p></p><p>-MAF sensor (contaminated, damaged, malfunctioning, etc.)</p><p></p><p>Fuel System</p><p></p><p>-Fuel pressure regulator (leaking, malfunctioning, etc.).</p><p>-Fuel filter plugged, dirty.</p><p>-Fuel pump (weak, check valve leaking, etc.).</p><p>-Leaking/contaminated fuel injectors.</p><p>-Low fuel pressure or running out of fuel.</p><p>-EVAP canister purge valve leaking (when canister is "clean").</p><p>-Fuel supply line restricted.</p><p>-Fuel rail pressure sensor (incorrect reading).</p><p></p><p>Air Induction System</p><p></p><p>-Air leaks after the MAF.</p><p>-Vacuum leaks.</p><p>-PCV system (leak, valve stuck open, etc.)</p><p>-Improperly seated engine oil dipstick.</p><p>-Air induction turbulence due to incorrect air filter.</p><p></p><p>Exhaust System</p><p></p><p>-Exhaust leaks before or near the HO2Ss (exhaust manifold gasket, mating gaskets, etc.).</p><p></p><p>EGR System</p><p></p><p>-EGR valve tube/gasket leak</p><p>-EVR solenoid vacuum leak</p><p></p><p>Secondary Air Injection</p><p></p><p>-Damaged/malfunctioning secondary air injection system (mechanically stuck valve).</p><p></p><p><span style="color: rgb(184, 49, 47)">*** View Freeze Frame Data to determine operating conditions when DTC was set. Observe LONGFT1 and 2 PID</span></p><p></p><p></p><p>P1000 - OBD (On Board Diagnostic) System Readiness Test Not Complete</p><p></p><p>The OBD monitors are performed during the OBD Drive Cycle. The P1000 will be stored in continuous memory if any of the OBD monitors do not complete their full diagnostic check.</p><p></p><p>-Battery or PCM had recently been disconnected</p><p>-An OBD monitor failure had occurred before completion of an OBD drive cycle</p><p>-PCM DTCs have recently been cleared with a scan tool</p><p>-PTO circuit is shorted to VPWR or B+ or PTO is on during testing</p><p></p><p>The Ford P1000, inspection/maintenance (I/M) readiness function is part of the PCM strategy. A battery disconnection or clearing codes using a scan tool results in the various I/M readiness bits being set to a "not-ready" condition. As each non-continuous OBD monitor completes a full diagnostic check, the I/M readiness bit associated with that monitor is set to a "ready" condition. This may take 1 or 2 drive cycles based on whether malfunctions are detected or not. The readiness bits for comprehensive component monitoring, misfire and fuel system monitoring are considered complete once all the non-continuous monitors have been evaluated. Because the EVAP system monitor requires certain ambient conditions to run, special logic can "bypass" the monitor for purpose of clearing the EVAP system I/M readiness bit due to continued presence of these extreme conditions.</p><p></p><p></p><p>Note:The P1000 does not need to be cleared from the PCM except to pass an I/M test.</p><p></p><p></p><p></p><p>Lightning Fast<img class="smilie smilie--emoji" loading="lazy" alt="⚡" title="High voltage :zap:" src="https://cdn.jsdelivr.net/joypixels/assets/6.6/png/unicode/64/26a1.png" data-shortname=":zap:" />Electrical Automotive Repair LLC</p><p>PM Me or <a href="mailto:Lightning_Fast@comcast.net">Lightning_Fast@comcast.net</a></p><p>Remote or Local (On Site) Technical Repair</p></blockquote><p></p>
[QUOTE="Vinnie_B, post: 16777864, member: 201678"] P0174 - System to Lean (Bank 2) The Adaptive Fuel Strategy continuously monitors the fuel delivery hardware. The test fails when the adaptive fuel tables reach a rich calibrated limit. [COLOR=rgb(184, 49, 47)]Check the following:[/COLOR] Air Measurement System -MAF sensor (contaminated, damaged, malfunctioning, etc.) Fuel System -Fuel pressure regulator (leaking, malfunctioning, etc.). -Fuel filter plugged, dirty. -Fuel pump (weak, check valve leaking, etc.). -Leaking/contaminated fuel injectors. -Low fuel pressure or running out of fuel. -EVAP canister purge valve leaking (when canister is "clean"). -Fuel supply line restricted. -Fuel rail pressure sensor (incorrect reading). Air Induction System -Air leaks after the MAF. -Vacuum leaks. -PCV system (leak, valve stuck open, etc.) -Improperly seated engine oil dipstick. -Air induction turbulence due to incorrect air filter. Exhaust System -Exhaust leaks before or near the HO2Ss (exhaust manifold gasket, mating gaskets, etc.). EGR System -EGR valve tube/gasket leak -EVR solenoid vacuum leak Secondary Air Injection -Damaged/malfunctioning secondary air injection system (mechanically stuck valve). [COLOR=rgb(184, 49, 47)]*** View Freeze Frame Data to determine operating conditions when DTC was set. Observe LONGFT1 and 2 PID[/COLOR] P1000 - OBD (On Board Diagnostic) System Readiness Test Not Complete The OBD monitors are performed during the OBD Drive Cycle. The P1000 will be stored in continuous memory if any of the OBD monitors do not complete their full diagnostic check. -Battery or PCM had recently been disconnected -An OBD monitor failure had occurred before completion of an OBD drive cycle -PCM DTCs have recently been cleared with a scan tool -PTO circuit is shorted to VPWR or B+ or PTO is on during testing The Ford P1000, inspection/maintenance (I/M) readiness function is part of the PCM strategy. A battery disconnection or clearing codes using a scan tool results in the various I/M readiness bits being set to a "not-ready" condition. As each non-continuous OBD monitor completes a full diagnostic check, the I/M readiness bit associated with that monitor is set to a "ready" condition. This may take 1 or 2 drive cycles based on whether malfunctions are detected or not. The readiness bits for comprehensive component monitoring, misfire and fuel system monitoring are considered complete once all the non-continuous monitors have been evaluated. Because the EVAP system monitor requires certain ambient conditions to run, special logic can "bypass" the monitor for purpose of clearing the EVAP system I/M readiness bit due to continued presence of these extreme conditions. Note:The P1000 does not need to be cleared from the PCM except to pass an I/M test. Lightning Fast⚡Electrical Automotive Repair LLC PM Me or [email]Lightning_Fast@comcast.net[/email] Remote or Local (On Site) Technical Repair [/QUOTE]
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