Fault code lookup

PowertrainP065A

Serious

Severity: Serious - have it checked soon

Generator System Performance

28 brands affected · Generic SAE J2012 description.

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

Safety: This code relates to the charging system. The battery may go flat and the car may stall.

1What it means in plain English

The engine computer or one of its output circuits has a fault.

2Common causes

  1. Engine control module fault
  2. Power or ground connection problem
  3. Low battery or charging voltage
  4. Wiring short or open circuit
  5. Software or memory fault

3Can I drive?

Serious · drive with care

If the engine runs normally, drive carefully to a workshop for diagnosis. If it runs badly, stalls, or will not restart, have the car towed.

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 28

BrandCodeDescriptionSystem
Ashok Leyland CVP065AGenerator System Performance SAEPowertrain
BAIC MotorP065ASystem voltage abnormal BrandPowertrain
BYDP065AGenerator System Performance BrandPowertrain
CheryP065AEngine idle BrandPowertrain
DaewooP065AGenerator System Performance BrandPowertrain
DFFSP065AControlled generator failure BrandPowertrain
DFFXP065AGenerator System Performance BrandPowertrain
DFXKP065AGenerator System Performance BrandPowertrain
EOBDP065AGeneratorsystemytelse BrandPowertrain
GeelyP065AGenerator System Performance BrandPowertrain
GMP065AGenerator System Performance BrandPowertrain
Great WallP065AGenerator System Performance BrandPowertrain
HafeiP065AGenerator System Performance BrandPowertrain
HoldenP065AGenerator Mechanical Malfunction BrandPowertrain
HondaP065AGenerator System Performance SAEPowertrain
HyundaiP065AGenerator System Performance SAEPowertrain
IsuzuP065AGenerator System Performance SAEPowertrain
Land RoverP065AGenerator system performance BrandPowertrain
MaseratiP065AGenerator System Performance BrandPowertrain
MitsubishiP065AAlternator internal error BrandPowertrain
OpelP065AGenerator System Performance BrandPowertrain
PeugeotP065AGenerator System Performance SAEPowertrain
PorscheP065AGenerator Moment unplausibel BrandPowertrain
ProtonP065AAlternator internal error BrandPowertrain
SaabP065AGenerator System Performance BrandPowertrain
MG (SAIC)P065AGenerator System Performance BrandPowertrain
SubaruP065AGenerator System Performance SAEPowertrain
ToyotaP065AControlled generator failure BrandPowertrain

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 1

These 7-character codes are manufacturer-specific variants of P065A and may be reported by some scan tools.

BrandCodeDescriptionSystem
SsangYongP065A00Alternator circuit error BrandPowertrain

6Related codes

  • P0650 Malfunction Indicator Lamp (MIL) Control Circuit
  • P0651 Sensor Reference Voltage B Circuit/Open
  • P0652 Sensor Reference Voltage B Circuit Low
  • P0653 Sensor Reference Voltage B Circuit High
  • P0654 Engine RPM Output Circuit
  • P0655 Engine Hot Lamp Output Control Circuit
  • P0656 Fuel Level Output Circuit
  • P0657 Actuator Supply Voltage A Circuit/Open
  • P0658 Actuator Supply Voltage A Circuit Low
  • P0659 Actuator Supply Voltage A Circuit High
  • P065B Generator electrical fault
  • P065C Generator mechanical fault

Browse Pxxx codes or P065xx codes.

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