P1602

Loss of EBTCM Serial Data

P1603

Loss of SDM Serial Data

P1604

Loss of IPC Serial Data

P1605

Loss of HVACC Serial Data

P1605

Keep Alive Memory Failure (Ford)

P1605

Powertrain Control Module (Mazda)

P1607

Malfunction In PCM Internal Circuit (Acura)

P1610

Loss of PZM Serial Data

P1611

Loss of CVRTD Serial Data

P1617

Engine Oil Level Switch Circuit

P1621

PCM Memory Performance

P1626

Theft Deterrent System – Fuel Enable Circuit

P1630

Theft Deterrent – PCM in Learn Mode

P1631

Theft Deterrent – Password Incorrect

P1632

Theft Deterrent – Fuel Disabled

P1633

Ignition Supplement Power Circuit Low Voltage

P1633

Keep Alive Power Voltage Too Low (Ford)

P1634

Ignition 1 Power Circuit Low Voltage

P1635

5 Volt Reference Circuit (GM)

P1635

Tire/Axle Out Of Acceptable Range (Ford)

P1639

5 Volt Reference 2 Circuit (GM)

P1639

Vehicle ID Block Not Programmed Or Corrupt (Ford)

P1640

DTC’s Available In Another Module (Ford)

P1640

Driver 1 – Input High Voltage

P1641

Malfunction Indicator Lamp (MIL) Control Circuit

P1642

Vehicle Speed Output Circuit

P1644

Delivered Torque Output Circuit

P1645

EVAP Solenoid Output Circuit

P1646

EVAP Vent Valve Output Circuit

P1650

Driver 2 – Input High Voltage

P1650

Power Steering Pressure Switch Malfunction (Ford)

P1650

Power Steering Pressure Switch Out Of Range (Mazda)

P1651

Power Steering Pressure Switch Input Malfunction (Mazda)

P1651

Power Steering Pressure Switch Signal Malfunction (Ford)

P1652

Lift/Dive Circuit

P1654

Cruise Disable Output Circuit

P1656

Automatic Transaxle (Acura)

P1660

Cooling Fan Control Circuits

P1660

A/T FI Data Line Failure (Acura)

P1676

FPTDR Signal Failure (Acura)

P1678

FPTDR Signal Line Failure (Acura)

P1680

Clutch Released Switch Circuit (CHRYSLER)

P1681

No I/P Cluster CCD/J1850 Messages Received (CHRYSLER)

P1681

A/T FI Signal A Low Input (Acura)

P1682

A/T FI Signal A High Input (Acura)

P1682

Charging System Voltage Too Low (CHRYSLER)

P1683

Speed Control Power Relay or S/C 12V Driver Circuit (CHRYSLER)

P1685

Skim Invalid Key(CHRYSLER)

P1686

No SKIM Bus Message Received (CHRYSLER)

P1686

A/T FI Signal B Low Input (Acura)

P1687

A/T FI Signal B High Input (Acura)

P1687

No Cluster Bus Message (CHRYSLER)

P1689

Traction Control Delivered Torque Output Circuit (GM)

P1693

DTC Detected In Companion Mode (CHRYSLER)

P1694

Fault In Companion Mode (CHRYSLER)

P1695

No CCD/J185O Message From BCM (CHRYSLER)

P1696

PCM Failure EEPROM Write Denied (CHRYSLER)

P1697

PCM Failure SRI Mile Not Stored (CHRYSLER)

P1698

No Bus Message From TCM (CHRYSLER)

Mass Air Flow (MAF) Circuit Low Input

Description:

How does a P0102 code trigger the check engine light? The engine light will come on if the following concern is present:

The Mass Air Flow Sensor circuit is monitored by the powertrain control module (computer), for low voltage (which translates to low air flow) through the Comprehensive Component Monitor (CCM). With the key on and engine running, if the voltage drops below a minimum value this code will be set, causing the check engine light to illuminate.

Possible Causes:

MAF Sensor disconnected
MAF Sensor circuit open to computer
Vehicle Power circuit open to MAF Sensor
Power Ground circuit open to MAF Sensor
MAF Sensor Return circuit open to PCM
MAF Sensor circuit shorted to Ground
Intake air leak near MAF Sensor
Damaged MAF Sensor
Damaged computer

Diagnostic Help:

Refer to an appropriate manual for specification. If MAF Sensor voltage reading is below minimum limit with key on engine running then concern is a hard fault (present now). If all values are in spec proceed with intermittent diagnosis (refer to our “Intermittent Diagnosis Help” article through the “articles” link on the Navigation Bar). You may also use the “Get Help” link if you need specifications or have any other related questions.

P0500 Vehicle Speed Sensor
P0501 Vehicle Speed Sensor Range/Performance
P0502 Vehicle Speed Sensor Circuit Low Input
P0503 Vehicle Speed Sensor Intermittent/Erratic/High

P0505 Idle Control System
P0506 Idle Control System RPM Lower Than Expected
P0507 Idle Control System RPM Higher Than Expected
P0508 Idle Control System Circuit Low
P0509 Idle Control System Circuit High

P0510 Closed Throttle Position Switch
P0512 Starter Request Circuit
P0513 Incorrect Irnmobilizer Key (“Immobilizer pending SAE J1930 approval)

P0515 Battery Temperature Sensor Circuit
P0516 Battery Temperature Sensor Circuit Low
P0517 Battery Temperature Sensor Circuit High

P0520 Engine Oil Pressure Sensor/Switch Circuit
P0521 Engine Oil Pressure Sensor/Switch Range/Performance
P0522 Engine Oil Pressure Sensor/Switch Low Voltage
P0523 Engine Oil Pressure Sensor/Switch High Voltage
P0524 Engine Oil Pressure Too Low

P0530 A/C Refrigerant Pressure Sensor Circuit
P0531 A/C Refrigerant Pressure Sensor Circuit Range/Performance
P0532 A/C Refrigerant Pressure Sensor Circuit Low Input
P0533 A/C Refrigerant Pressure Sensor Circuit High Input
P0534 Air Conditioner Refrigerant Charge Loss

P0540 Intake Air Heater Circuit
P0541 Intake Air Heater Circuit Low
P0542 Intake Air Heater Circuit High

P0544 Exhaust Gas Temperature Sensor Circuit (Bank 1)
P0545 Exhaust Gas Temperature Sensor Circuit Low (Bank 1)
P0546 Exhaust Gas Temperature Sensor Circuit High (Bank 1)
P0547 Exhaust Gas Temperature Sensor Circuit (Bank 2)
P0548 Exhaust Gas Temperature Sensor Circuit Low (Bank 2)
P0549 Exhaust Gas Temperature Sensor Circuit High (Bank 2)

P0550 Power Steering Pressure Sensor Circuit
P0551 Power Steering Pressure Sensor Circuit Range/Performance
P0552 Power Steering Pressure Sensor Circuit Low Input
P0553 Power Steering Pressure Sensor Circuit High Input
P0554 Power Steering Pressure Sensor Circuit Intermittent

P0560 System Voltage
P0561 System Voltage Unstable
P0562 System Voltage Low
P0563 System Voltage High

P0564 Cruise Control Multi-Function Input Signal
P0565 Cruise Control On Signal
P0566 Cruise Control Off Signal
P0567 Cruise Control Resume Signal
P0568 Cruise Control Set Signal
P0569 Cruise Control Coast Signal
P0570 Cruise Control Accel Signal
P0571 Cruise Control/Brake Switch A Circuit
P0572 Cruise Control/Brake Switch A Circuit Low
P0573 Cruise Control/Brake Switch A Circuit High
P0574 Cruise Control System – Vehicle Speed Too High
P0575 Cruise Control Input Circuit
P0576 Cruise Control Input Circuit Low
P0577 Cruise Control input Circuit High
P0578 through P0580 Reserved for Cruise Control Codes

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