Getting a low flow error code ....heats on high pump then goes back on with regular flow ...

P1000 OBD-II Monitor Testing Incomplete<br />P1001 KOER Test Cannot Be Completed<br />P1039 Vehicle Speed Signal Missing or Improper<br />P1051 Brake Switch Signal Missing or Improper<br />P1100 Mass Air Flow Sensor Intermittent<br />P1101 Mass Air Flow Sensor out of Self-Test Range<br />P1112 Intake Air Temperature Sensor Intermittent<br />P1116 Engine Coolant Temperature Sensor is out of Self-Test Range<br />P1117 Engine Coolant Temperature Sensor Intermittent<br />P1120 Throttle Position Sensor out of range<br />P1121 Throttle Position Sensor Inconsistent with Mass Air Flow Sensor<br />P1124 Throttle Position Sensor out of Self-Test Range<br />P1125 Throttle Position Sensor Intermittent<br />P1127 Heated Oxygen Sensor Heater not on During KOER Test<br />P1128 Heated Oxygen Sensor Signals reversed<br />P1129 Heated Oxygen Sensor Signals reversed<br />P1130 Lack of Upstream Heated Oxygen Sensor Switch - Adaptive Fuel Limit - Bank No. 1<br />P1131 Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank No. 1<br />P1132 Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Rich - Bank No. 1<br />P1135 Ignition Switch Signal Missing or Improper<br />P1137 Lack of Downstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank No. 1<br />P1138 Lack of Downstream Heated Oxygen Sensor Switch - Sensor Indicates Rich - Bank No. 1<br />P1150 Lack of Upstream Heated Oxygen Sensor Switch - Adaptive Fuel Limit - Bank No. 2<br />P1151 Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank No. 2<br />P1152 Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Rich - Bank No. 2<br />P1157 Lack of Downstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank No. 2<br />P1158 Lack of Downstream Heated Oxygen Sensor Switch - Sensor Indicates Rich - Bank No. 2<br />P1220 Series Throttle Control fault<br />P1224 Throttle Position Sensor B out of Self-Test Range<br />P1230 Open Power to Fuel Pump circuit<br />P1231 High Speed Fuel Pump Relay activated<br />P1232 Low Speed Fuel Pump Primary circuit failure<br />P1233 Fuel Pump Driver Module off-line<br />P1234 Fuel Pump Driver Module off-line<br />P1235 Fuel Pump Control out of range<br />P1236 Fuel Pump Control out of range<br />P1237 Fuel Pump Secondary circuit fault<br />P1238 Fuel Pump Secondary circuit fault<br />P1250 Lack of Power to FPRC Solenoid<br />P1260 Theft Detected - Engine Disabled<br />P1270 Engine RPM or Vehicle Speed Limiter Reached<br />P1288 Cylinder Head Temperature Sensor out of Self-Test Range<br />P1289 Cylinder Head Temperature Sensor Signal Greater Than Self-Test Range<br />P1290 Cylinder Head Temperature Sensor Signal Less Than Self-Test Range<br />P1299 Cylinder Head Temperature Sensor Detected Engine Overheating Condition<br />P1309 Misfire Detection Monitor not enabled<br />P1351 Ignition Diagnostic Monitor circuit Input fault<br />P1352 Ignition Coil A - Primary circuit fault<br />P1353 Ignition Coil B - Primary circuit fault<br />P1354 Ignition Coil C - Primary circuit fault<br />P1355 Ignition Coil D - Primary circuit fault<br />P1356 Loss of Ignition Diagnostic Module Input to PCM<br />P1358 Ignition Diagnostic Monitor Signal out of Self-Test Range<br />P1359 Spark Output circuit fault<br />P1364 Ignition Coil Primary circuit fault<br />P1380 VCT Solenoid Valve circuit Short or Open<br />P1381 Cam Timing Advance is excessive<br />P1383 Cam Timing Advance is excessive<br />P1390 Octane Adjust out of Self-Test Range<br />P1400 Differential Pressure Feedback Electronic Sensor circuit Low Voltage<br />P1401 Differential Pressure Feedback Electronic Sensor circuit High Voltage<br />P1403 Differential Pressure Feedback Electronic Sensor Hoses Reversed<br />P1405 Differential Pressure Feedback Electronic Sensor circuit Upstream Hose<br />P1406 Differential Pressure Feedback Electronic Sensor circuit Downstream Hose<br />P1407 EGR No Flow Detected<br />P1408 EGR Flow out of Self-Test Range<br />P1409? EGR Vacuum Regulator circuit malfunction<br />P1409? Electronic Vacuum Regulator Control circuit fault<br />P1410 EGR Barometric Pressure Sensor VREF Voltage<br />P1411 Secondary Air is not being diverted<br />P1413 Secondary Air Injection System Monitor circuit Low Voltage<br />P1414 Secondary Air Injection System Monitor circuit High Voltage<br />P1442 Secondary Air Injection System Monitor circuit High Voltage<br />P1443 Evaporative Emission Control System - Vacuum System - Purge Control Solenoid or Purge Control Valve fault<br />P1444 Purge Flow Sensor circuit Input Low<br />P1445 Purge Flow Sensor circuit Input High<br />P1450 Inability of Evaporative Emission Control System to Bleed Fuel Tank<br />P1451 EVAP Control System Canister Vent Solenoid Circuit Malfunction<br />P1452 Inability of Evaporative Emission Control System to Bleed Fuel Tank<br />P1455 Substantial Leak or Blockage in Evaporative Emission Control System<br />P1460 Wide Open Throttle Air Conditioning Cutoff circuit malfunction<br />P1461 Air Conditioning Pressure Sensor circuit Low Input<br />P1462 Air Conditioning Pressure Sensor circuit high Input<br />P1463 Air Conditioning Pressure Sensor Insufficient Pressure change<br />P1464 ACCS to PCM High During Self-Test<br />P1469 Low Air Conditioning Cycling Period<br />P1473 Fan Secondary High with Fans Off<br />P1474 Low Fan Control Primary circuit<br />P1479 High Fan Control Primary circuit<br />P1480 Fan Secondary Low with Low Fans On<br />P1481 Fan Secondary Low with High Fans On<br />P1483 Power to Cooling Fan Exceeded Normal Draw<br />P1484 Variable Load Control Module Pin 1 Open<br />P1500 Vehicle Speed Sensor Intermittent<br />P1501 Programmable Speedometer & Odometer Module/Vehicle Speed Sensor Intermittent circuit-failure<br />P1502 Invalid or Missing Vehicle Speed Message or Brake Data<br />P1504 Intake Air Control circuit malfunction<br />P1505 Idle Air Control System at Adaptive Clip<br />P1506 Idle Air Control Over Speed Error<br />P1507 Idle Air Control Under Speed Error<br />P1512 Intake Manifold Runner Control Stuck Closed<br />P1513 Intake Manifold Runner Control Stuck Closed<br />P1516 Intake Manifold Runner Control Input Error<br />P1517 Intake Manifold Runner Control Input Error<br />P1518 Intake Manifold Runner Control fault - Stuck Open<br />P1519? Intake Manifold Runner Control Stuck Open<br />P1520? Intake Manifold Runner Control circuit fault<br />P1519? Intake Manifold Runner Control fault - Stuck Closed<br />P1520? Intake Manifold Runner Control fault<br />P1530 Open or Short to A/C Compressor Clutch circuit<br />P1537 Intake Manifold Runner Control Stuck Open<br />P1538 Intake Manifold Runner Control Stuck Open<br />P1539 Power to A/C Compressor Clutch circuit Exceeded Normal Current Draw<br />P1549 Intake Manifold Temperature Valve Vacuum Actuator Connection<br />P1550 Power Steering Pressure Sensor out of Self-Test Range<br />P1605 PCM Keep Alive Memory Test Error<br />P1625 Voltage to Vehicle Load Control Module Fan circuit not detected<br />P1626 Voltage to Vehicle Load Control Module circuit not detected<br />P1650 Power Steering Pressure Switch out of Self-Test Range<br />P1651 Power Steering Pressure Switch Input fault<br />P1700 Transmission system problems<br />P1701 Reverse Engagement Error<br />P1702 Transmission system problems<br />P1703 Brake On/Off Switch out of Self-Test Range<br />P1704 Transmission system problems<br />P1705 Manual Lever Position Sensor out of Self-Test Range<br />P1709 Park or Neutral Position Switch out of Self-Test Range<br />P1710 Transmission system problems<br />P1711 Transmission Fluid Temperature Sensor out of Self-Test Range<br />P1713<br />thru<br />P172 Transmission system problems<br />P1729 4x4 Low Switch Error<br />P1740 Transmission system problems<br />P1741 Torque Converter Clutch Control Error<br />P1742 Torque Converter Clutch Solenoid Faulty<br />P1743 Torque Converter Clutch Solenoid Faulty<br />P1744 Torque Converter Clutch System Stuck in Off Position<br />P1745 Transmission system problems<br />P1746 Electronic Pressure Control Solenoid - Open circuit<br />P1747 Electronic Pressure Control Solenoid - Short circuit<br />P1749 Electronic Pressure Control Solenoid Failed Low<br />P1751 Shift Solenoid No. 1 Performance<br />P1754 Coast Clutch Solenoid circuit malfunction<br />P1756 Shift Solenoid No. 2 Performance<br />P1760 Transmission system problems<br />P1761 Shift Solenoid No. 3 Performance<br />P1762 Transmission system problems<br />P1767 Transmission system problems<br />P1780 Transmission Control Switch circuit is out of Self-Test Range<br />P1781 4x4 Low Switch is out of Self-Test Range<br />P1783 Transmission Over-Temperature Condition<br />P1784 Transmission system problems<br />P1785 Transmission system problems<br />P1786 Transmission system problems<br />P1787 Transmission system problems<br />P1788 Transmission system problems<br />P1789 Transmission system problems<br />P1900 Transmission system problems