Chapter XII. Engine management system
(1) Throttle works in protected mode, engine works in emergency mode, torque
(2) Unreliable electrical connections (3)
Malfunction of the accelerator pedal position sensor.
(2) Unreliable electrical connections (3)
Malfunction of the accelerator pedal position sensor.
Trouble Code P2135: Throttle Position Sensors 1 and 2 Mismatched
motor torque is limited;
ki
DTC P2127 - Accelerator Pedal Position Sensor Circuit Low Voltage #2 (a) Prerequisite: Engine running. (b)
Malfunction detection principle: the engine
control unit determines that the signal value of sensor No.
(2) The maximum engine torque is limited in the absence of other sensor failures, but it is still possible to continue
driving in emergency engine operation.
2 accelerator pedal positions below 3.5%. (c)
Emergency operation: not provided. (d) Possible causes
of malfunction: (1) Short to ground or open
circuit between the No. 2 accelerator pedal position sensor and the unit
(a) Prerequisites: The controller is connected. (b)
Malfunction detection principle: (1) The
difference between the voltage values of the two throttle position sensors exceeds the set
(d) Possible causes of malfunction: (1)
Strong external electromagnetic interference; (2)
Unreliable connection of sensors No. 1 and 2 of the position of the accelerator pedal;
(3) Faulty accelerator pedal position sensors. DTC P2187 -
Excessively lean mixture at idle (a) Prerequisites:
(1) The engine is idling; (2) Atmospheric pressure
above 72 kPa; (3) The intake air
temperature is greater than -7°C; (4) Battery voltage
is over 11V;
engine control;
updated value (12%) for more than 400 ms. (c)
Emergency operation:
(1) Not provided. The engine is running normally. But since the throttle position values may be incorrect due to a
malfunction, under some conditions, abrupt changes in engine power and loss of dynamics may occur. (d)
Possible causes of malfunction: (1) Strong
external electromagnetic interference; (2)
Unreliable connection of sensors No. 1 and 2 of
the throttle position; (3) Faulty throttle position sensors.
(2) Unreliable electrical connections (3)
Malfunction of the accelerator pedal position sensor.
DTC P2128 - Accelerator Pedal Position Sensor Circuit High Voltage #2 (a) Prerequisites: Engine running. (b)
Malfunction detection principle: the engine
control unit determines that the signal value of sensor No.
DTC P2138 - Accelerator Pedal Position Sensors #1 and #2 Mismatch (a) Prerequisites: Controller connected. (b)
Malfunction detection principle: (1) The difference
between the voltage values of the two
accelerator pedal position sensors exceeds the set value (10%), or the difference between the self-learning values
of the accelerator pedal position sensors exceeds the set value (8%);
2 accelerator pedal positions above 97.5%. (c)
Emergency operation: not provided. (d) Possible causes
of malfunction: (1) Short to 5V power
supply in the circuit between the No. 2 accelerator pedal position sensor and the unit
(2) The above state of the sensors lasts more than 400ms. (c)
Emergency operation:
engine control;
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