B1200 Climate control push button circuit failure
B1201 Fuel sender circuit failure
B1202 Fuel sender circuit
B1203 Fuel sender circuit
B1204 Fuel sender circuit
B1205 EIC (Electronic Instrument Cluster) switch-1 assembly circuit failure
B1206 EIC switch-1 assembly circuit open
B1207 EIC switch-1 assembly circuit short to battery
B1208 EIC switch-1 assembly circuit short to ground
B1209 EIC switch-2 assembly circuit failure
B1210 EIC switch-2 assembly circuit
B1211 EIC switch-2 assembly circuit
B1212 EIC switch-2 assembly circuit
B1213 Anti-theft number of programmed keys is below minimum
B1214 Running board lamp circuit failure
B1215 Running board lamp circuit short to battery
B1216 Emergency and road side assistance switch short circuit to ground
B1217 Horn relay coil circuit failure
B1218 Horn relay coil circuit short to vbatt
B1219 Fuel tank pressure sensor circuit failure
B1220 Fuel tank pressure sensor circuit open
B1222 Fuel temperature sensor #1 circuit failure
B1223 Fuel temperature sensor #1 circuit open
B1224 Fuel temperature sensor #1 circuit short to battery
B1225 Fuel temperature sensor #1 circuit short to ground
B1226 Fuel temperature sensor #2 circuit failure
B1227 Fuel temperature sensor #2 circuit open
B1228 Fuel temperature sensor #2 circuit short to battery
B1229 Fuel temperature sensor #2 circuit short to ground
B1231 Longitudinal acceleration threshold exceeded
B1232 DO NOT USE???
B1233 Glass break sensor failure
B1234 Mirror switch invalid code
B1235 Window feedback failure
B1236 Window feedback loss of signal
B1237 Window feedback out of range
B1238 Over temperature fault
B1239 Air flow blend door driver circuit failure
B1240 Wiper washer rear pump relay circuit failure
B1241 Wiper washer rear pump relay circuit short to battery
B1242 Air flow recirculation door driver circuit failure
B1243 Express window down switch circuit short to battery
B1244 Wiper rear motor run relay circuit failure
B1245 Wiper rear motor run relay circuit short to battery
B1246 Dim panel potentiometer switch circuit failure
B1247 Panel dim switch circuit open
B1248 Passenger’s seatback autoglide rearward switch circuit short to ground
B1249 Blend door failure
B1250 Air temperature internal sensor failure
B1251 Air temperature internal sensor open
B1252 Air temperature internal sensor short to battery
B1253 Air temperature internal sensor short to ground
B1254 Air temperature external sensor failure
B1255 Air temperature external sensor open
B1256 Air temperature external sensor short to battery
B1257 Air temperature external sensor short to ground
B1258 Solar radiation sensor circuit failure
B1259 Solar radiation sensor circuit open
B1260 Solar radiation sensor circuit short to battery
B1261 Solar radiation sensor circuit short to ground
B1262 Servo motor defrost circuit failure
B1263 Servo motor vent circuit failure
B1264 Servo motor foot circuit failure
B1265 Servo motor coolair bypass circuit failure
B1266 Servo motor air intake left circuit failure
B1267 Servo motor air intake right circuit failure
B1268 Servo motor potentiometer defrost circuit failure
B1269 Servo motor potentiometer defrost circuit open
B1270 Servo motor potentiometer defrost circuit short to battery
B1271 Servo motor potentiometer defrost circuit short to ground
B1272 Servo motor potentiometer vent circuit failure
B1273 Servo motor potentiometer vent circuit open
B1274 Servo motor potentiometer vent circuit short to battery
B1275 Servo motor potentiometer vent circuit short to ground
B1276 Servo motor potentiometer foot circuit failure
B1277 Servo motor potentiometer foot circuit open
B1278 Servo motor potentiometer foot circuit short to battery
B1279 Servo motor potentiometer foot circuit short to ground
B1280 Servo motor potentiometer coolair circuit failure
B1281 Servo motor potentiometer coolair circuit open
B1282 Servo motor potentiometer coolair circuit short to battery
B1283 Servo motor potentiometer coolair circuit short to ground
B1284 Servo motor potentiometer airintake left circuit failure
B1285 Servo motor potentiometer airintake left circuit open
B1286 Servo motor potentiometer airintake left circuit short to battery
B1287 Servo motor potentiometer airintake left circuit short to ground
B1288 Servo motor potentiometer airintake right circuit failure
B1289 Servo motor potentiometer airintake right circuit open
B1290 Servo motor potentiometer airintake right circuit short to battery
B1291 Servo motor potentiometer airintake right circuit short to ground
B1292 Battery power relay circuit failure
B1293 Battery power relay circuit open
B1294 Battery power relay circuit short to battery
B1295 Battery power relay circuit short to ground
B1296 Power supply sensor circuit failure
B1297 Power supply sensor circuit open
B1298 Power supply sensor circuit short to battery
B1299 Power supply sensor circuit short to ground
B1200 Climate control push button circuit failure
B1201 Fuel sender circuit failure
B1202 Fuel sender circuit
B1203 Fuel sender circuit
B1204 Fuel sender circuit
B1205 EIC (Electronic Instrument Cluster) switch-1 assembly circuit failure
B1206 EIC switch-1 assembly circuit open
B1207 EIC switch-1 assembly circuit short to battery
B1208 EIC switch-1 assembly circuit short to ground
B1209 EIC switch-2 assembly circuit failure
B1210 EIC switch-2 assembly circuit
B1211 EIC switch-2 assembly circuit
B1212 EIC switch-2 assembly circuit
B1213 Anti-theft number of programmed keys is below minimum
B1214 Running board lamp circuit failure
B1215 Running board lamp circuit short to battery
B1216 Emergency and road side assistance switch short circuit to ground
B1217 Horn relay coil circuit failure
B1218 Horn relay coil circuit short to vbatt
B1219 Fuel tank pressure sensor circuit failure
B1220 Fuel tank pressure sensor circuit open
B1222 Fuel temperature sensor #1 circuit failure
B1223 Fuel temperature sensor #1 circuit open
B1224 Fuel temperature sensor #1 circuit short to battery
B1225 Fuel temperature sensor #1 circuit short to ground
B1226 Fuel temperature sensor #2 circuit failure
B1227 Fuel temperature sensor #2 circuit open
B1228 Fuel temperature sensor #2 circuit short to battery
B1229 Fuel temperature sensor #2 circuit short to ground
B1231 Longitudinal acceleration threshold exceeded
B1232 DO NOT USE???
B1233 Glass break sensor failure
B1234 Mirror switch invalid code
B1235 Window feedback failure
B1236 Window feedback loss of signal
B1237 Window feedback out of range
B1238 Over temperature fault
B1239 Air flow blend door driver circuit failure
B1240 Wiper washer rear pump relay circuit failure
B1241 Wiper washer rear pump relay circuit short to battery
B1242 Air flow recirculation door driver circuit failure
B1243 Express window down switch circuit short to battery
B1244 Wiper rear motor run relay circuit failure
B1245 Wiper rear motor run relay circuit short to battery
B1246 Dim panel potentiometer switch circuit failure
B1247 Panel dim switch circuit open
B1248 Passenger’s seatback autoglide rearward switch circuit short to ground
B1249 Blend door failure
B1250 Air temperature internal sensor failure
B1251 Air temperature internal sensor open
B1252 Air temperature internal sensor short to battery
B1253 Air temperature internal sensor short to ground
B1254 Air temperature external sensor failure
B1255 Air temperature external sensor open
B1256 Air temperature external sensor short to battery
B1257 Air temperature external sensor short to ground
B1258 Solar radiation sensor circuit failure
B1259 Solar radiation sensor circuit open
B1260 Solar radiation sensor circuit short to battery
B1261 Solar radiation sensor circuit short to ground
B1262 Servo motor defrost circuit failure
B1263 Servo motor vent circuit failure
B1264 Servo motor foot circuit failure
B1265 Servo motor coolair bypass circuit failure
B1266 Servo motor air intake left circuit failure
B1267 Servo motor air intake right circuit failure
B1268 Servo motor potentiometer defrost circuit failure
B1269 Servo motor potentiometer defrost circuit open
B1270 Servo motor potentiometer defrost circuit short to battery
B1271 Servo motor potentiometer defrost circuit short to ground
B1272 Servo motor potentiometer vent circuit failure
B1273 Servo motor potentiometer vent circuit open
B1274 Servo motor potentiometer vent circuit short to battery
B1275 Servo motor potentiometer vent circuit short to ground
B1276 Servo motor potentiometer foot circuit failure
B1277 Servo motor potentiometer foot circuit open
B1278 Servo motor potentiometer foot circuit short to battery
B1279 Servo motor potentiometer foot circuit short to ground
B1280 Servo motor potentiometer coolair circuit failure
B1281 Servo motor potentiometer coolair circuit open
B1282 Servo motor potentiometer coolair circuit short to battery
B1283 Servo motor potentiometer coolair circuit short to ground
B1284 Servo motor potentiometer airintake left circuit failure
B1285 Servo motor potentiometer airintake left circuit open
B1286 Servo motor potentiometer airintake left circuit short to battery
B1287 Servo motor potentiometer airintake left circuit short to ground
B1288 Servo motor potentiometer airintake right circuit failure
B1289 Servo motor potentiometer airintake right circuit open
B1290 Servo motor potentiometer airintake right circuit short to battery
B1291 Servo motor potentiometer airintake right circuit short to ground
B1292 Battery power relay circuit failure
B1293 Battery power relay circuit open
B1294 Battery power relay circuit short to battery
B1295 Battery power relay circuit short to ground
B1296 Power supply sensor circuit failure
B1297 Power supply sensor circuit open
B1298 Power supply sensor circuit short to battery
B1299 Power supply sensor circuit short to ground
P1400
DPFE Sensor Low Voltage (Mazda)
P1400
DPFE Sensor Low Voltage (Ford)
P1401
DPFE Sensor High Voltage (Mazda)
P1401
DPFE Sensor High Voltage (Ford)
P1403
DPFE Hoses Reversed (Mazda)
P1403
No 5 Volts To EGR Sensor (Chrysler)
P1404
Exhaust Gas Recirculation (EGR) Valve Pintle Stuck Open
P1405
DPFE Upstream Hose Off Or Plugged (Mazda)
P1405
DPFE Upstream Hose Off Or Plugged (Ford)
P1406
DPFE Downstream Hose Off Or Plugged (Mazda)
P1406
DPFE Downstream Hose Off Or Plugged (Ford)
P1407
EGR No Flow Detected (Mazda)
P1408
EGR Out Of Self Test Range (Mazda)
P1408
EGR Out Of Self Test Range (Ford)
P1409
Electronic Vacuum Regulator Control Circuit Malfunction (Mazda)
P1409
EGR Vacuum Regulator Solenoid Circuit Malfunction (Ford)
P1411
Secondary Air Injection System Downstream Flow (Ford)
P1413
Secondary Air Injection System Monitor Circuit Low (Ford)
P1414
Secondary Air Injection System Monitor Circuit High (Ford)
P1432
THTRC Circuit Failure (Ford)
P1441
Evaporative System Flow During Non-Purge
P1443
Evaporative Emission Control System (Mazda)
P1443
Small Or No Purge Flow Condition (Ford)
P1444
Purge Flow Sensor Low Input (Mazda)
P1445
Purge Flow Sensor High Input (Mazda)
P1450
Unable To Bleed Up Fuel Tank Vacuum (Ford)
P1451
EVAP Control System Canister Vent Solenoid Circuit Malfunction (Ford)
P1457
Leak Detected In EVAP Control Sys.(EVAP Canister Sys.) (Acura)
P1460
WOT A/C Cutoff Circuit Malfunction (Mazda)
P1460
WOT A/C Cutoff Circuit Malfunction (Ford)
P1461
ACP Sensor High Voltage (Ford)
P1462
ACP Sensor Low Voltage (Ford)
P1463
ACP Sensor Insufficent Pressure Change (Ford)
P1464
A/C Demand Out Of Range (Ford)
P1469
Low A/C Cycling Period (Ford)
P1474
HCF Primary Circuit Failure (Ford)
P1474
LFC Primary Circuit Failure (Ford)
P1476
Too Little Secondary Air (Chrysler)
P1477
Too Much Secondary Air (Chrysler)
P1477
MFC Primary Circuit Failure (Ford)
P1478
Battery Temp Sensor Volts Out of Limit (Chrysler)
P1479
HFC Primary Circuit Failure (Ford)
P1479
Transmission Fan Relay Circuit (Chrysler)
P1480
PCV Solenoid Valve (Chrysler)
P1482
Catalyst Temperature Sensor Circuit Shorted Low (Chrysler)
P1483
Engine Cooling System Performance
P1483
Catalyst Temperature Sensor Circuit Shorted High (Chrysler)
P1484
Catalytic Converter overheat Detected (Chrysler)
P1485
Air Injection Solenoid Circuit (Chrysler)
P1486
Evap Leak Monitor Pinched Hose (Chrysler)
P1487
Hi Speed Rad Fan CTRL Relay Circuit (Chrysler)
P1488
Auxiliary 5 Volt Supply Output Too Low (Chrysler)
P1489
High Speed Fan CTRL Relay Circuit (Chrysler)
P1490
Low Speed Fan CTRL Relay Circuit (Chrysler)
P1491
Rad Fan Control Relay Circuit (Chrysler)
P1491
Malfunction In EGR System (Acura)
P1492
Ambient/Batt Temp Sen Volts Too High (Chrysler)
P1493
Ambient/Batt Temp Sen Volts Too Low (Chrysler)
P1494
Leak Detection Pump Switch or Mechanical Fault (Chrysler)
P1495
Leak Detection Pump Solenoid Circuit (Chrysler)
P1496
5 Volt Supply Output Too Low (Chrysler)
P1498
High speed Rad Fan Ground CTRL Rly Circuit (Chrysler)
P1498
Voltage Problem In EGR Valve Position Sensor Circuit (Acura)
Mass Air Flow (MAF) Sensor
Description:
How does a P0100 code trigger the check engine light? This code will trigger the check engine light under the following conditions:
1. The computer receives an excessively high voltage from the MAF Sensor with the engine not running.
2. The computer receives an excessively low voltage from the MAF Sensor with the engine running.
3. The computer receives a high voltage reading from the MAF Sensor under light-load driving conditions.
Possible Causes:
MAF Sensor circuit open or shorted
Intake air leaks (unmetered air after MAF Sensor)
Defective MAF Sensor
Electronic Control Module (ECM)/Powertrian Control Module (PCM) concern
Diagnostic Help:
Monitor MAF Sensor voltage reading while increasing engine RPM. The MAF Sensor value should increase in proportion to engine speed. If not, first check for air leaks at intake tube, manifold and all vacuum lines. Then test the MAF Sensor circuits for opens and shorts. See our article Automotive Circuit Testing 101, if you need more assistance with this. If concern is determined to be intermittent, wiggle test connectors and wiring to attempt to duplicate concern. You may also use the “Get Help” link if you need specifications or have any other related questions. Remember to refer to an appropriate manual for specific instruction.
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