Fault code lookup

PowertrainP1102

Caution

Severity: Caution - get it checked when you can

Mass Air Flow Sensor In Range But Lower Than Expected

33 brands affected · Generic SAE J2012 description.

Key terms: Mass air flow sensor: measures the air going into the engine · Control module: a small computer that runs one part of the car · SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions

1What it means in plain English

The engine or powertrain control system has stored a fault that does not have specific guidance in this database yet.

2Common causes

  1. Sensor or actuator fault
  2. Wiring or connector fault
  3. Vacuum or intake leak
  4. Fuel or ignition problem
  5. Control module fault

3Can I drive?

Caution · drive with care

Have it diagnosed promptly. If the car runs and drives normally, drive gently to a workshop. If it runs badly, stalls, overheats, loses oil pressure, or a warning light is flashing or red, stop safely and get professional help. If the code concerns the brakes, brake vacuum or brake assist, do not drive until it is checked: a hard pedal or longer stopping distance means stop.

This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.

4Brand data 33

BrandCodeDescriptionSystem
Ashok Leyland CVP1102Mass Air Flow Sensor In Range But Lower Than Expected SAEPowertrain
BAIC MotorP1102air flow implausible BrandPowertrain
Mercedes-BenzP1102Mass Air Flow Sensor In Range But Lower Than Expected SAEPowertrain
BMWP1102adapted air-mass flow too small BrandPowertrain
BYDP1102TCL ventilation solenoid BrandPowertrain
CheryP1102TCL ventilation solenoid BrandPowertrain
DaewooP1102Oxygen Sensor Heating BrandPowertrain
DFFSP1102Mass Air Flow Sensor In Range But Lower Than Expected SAEPowertrain
DFFXP1102TCL ventilation solenoid BrandPowertrain
DFXKP1102Lost communication with Electronic Stability Control BrandPowertrain
EOBDP1102MAF andur/ahel BrandPowertrain
FordP1102This service function should be run after the cause and rectification of any of the following DTCs has been carried out. P2279, or P1103 BrandPowertrain
GeelyP1102TCL ventilation solenoid BrandPowertrain
GMP1102Oxygen Sensor Heating BrandPowertrain
Great WallP1102TCL ventilation solenoid BrandPowertrain
HafeiP1102TCL ventilation solenoid BrandPowertrain
HoldenP1102Fuel Rail Pressure (FRP) Sensor 1-2 Correlation BrandPowertrain
HondaP1102Mass Air Flow Sensor In Range But Lower Than Expected SAEPowertrain
HyundaiP1102Mass Air Flow Sensor In Range But Lower Than Expected SAEPowertrain
IsuzuP1102Mass Air Flow Sensor In Range But Lower Than Expected SAEPowertrain
Land RoverP1102Mass air flow sensor in range but lower than expected BrandPowertrain
MahindraP1102Mass Air Flow Sensor In Range But Lower Than Expected SAEPowertrain
MitsubishiP1102TCL ventilation solenoid BrandPowertrain
NissanP1102Mass Air Flow Sensor In Range But Lower Than Expected SAEPowertrain
OpelP1102Oxygen Sensor Heating BrandPowertrain
PeugeotP1102Mass Air Flow Sensor In Range But Lower Than Expected SAEPowertrain
PorscheP1102Mass Air Flow Sensor In Range But Lower Than Expected SAEPowertrain
ProtonP1102TCL ventilation solenoid BrandPowertrain
SaabP1102Oxygen Sensor Heating BrandPowertrain
SmartP1102Mass Air Flow Sensor In Range But Lower Than Expected SAEPowertrain
SubaruP1102Pressure Sources Switching Sol. Valve Circuit Low BrandPowertrain
SuzukiP1102MAF SEN/CIRCUIT BrandPowertrain
TataP1102Mass Air Flow Sensor In Range But Lower Than Expected SAEPowertrain

Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.

5Extended variant codes 6

These 7-character codes are manufacturer-specific variants of P1102 and may be reported by some scan tools.

BrandCodeDescriptionSystem
SsangYongP110200Without EGR, maximum positive error on air flow to set an AMF plausibility fault (flow too high) BrandPowertrain
SsangYongP11020CCPU hardware failure BrandPowertrain
SsangYongP11020DFirmware error BrandPowertrain
SsangYongP110215Accelerator pedal position sensor 1 circuit short to battery (+) BrandPowertrain
SsangYongP110216Under voltage(B+) BrandPowertrain
SsangYongP11029FLower DC-DC Converter (LDC) output voltage excessive BrandPowertrain

6Related codes

  • P1100 Mass Air Flow Sensor Intermittent
  • P1101 Mass Air Flow Sensor Out of Self-Test Range
  • P1103 Mass Air Flow Sensor In Range But Higher Than Expected
  • P1104 Signal too small
  • P1105 The intake air pressure sensor signal is implausible when the engine is not running.
  • P1106 Manifold Absolute Pressure Sensor Circuit Intermittent Low Voltage
  • P1107 Manifold Absolute Pressure Sensor Circuit Intermittent High Voltage
  • P1108 Intake air pressure sensor circuit voltage high intermittently
  • P1109 The intake air pressure sensor signal is implausible when the engine is running
  • P110A NO. 267 battery voltage sampling wire loop fault
  • P110B NO. 268 battery voltage sampling wire loop fault
  • P110C NO. 269 battery voltage sampling wire loop fault

Browse Pxxx codes or P110xx codes.

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