Page 2584 - Foton Workshop Manual - Sauvana

62-532 DIAGNOSIS-ENGINE CONTROL SYSTEM

DTC code Diagnosed items(DTC definition ) Fault location

• Throttle position sensor
• Poor contact of throttle position
The voltage of electronic throttle position sensor in the connector, Short
P0123
sensor signal 1 circuit is too high or open circuit in sensor wiring
harness
• ECU

• Oil rail pressure sensor
P0169 Oil path monitoring failure • Short or open circuit in harness
• ECU
• Inlet system
• Fuel injector
• Manifold pressure sensor
The self-learning value of the gas mixture • Fuel system pressure
P0171
exceeds the upper limit • Short or open circuit in oxygen
sensor wiring harness
• Oxygen sensor
• ECU

• Fuel injector
• Manifold pressure sensor
• Water temperature sensor
• Fuel temperature
The self-learning value of the gas mixture
P0172 • Gas leakage of exhaust system
exceeds the lower limit
• Short or open circuit in oxygen
sensor wiring harness
• Oxygen sensor
• ECU
• Oil rail pressure sensor
• Poor contact of oil rail pressure
Voltage of oil rail pressure sensor signal
P0192 sensor in the connector, open
circuit is too low
circuit of sensor harness
• ECU

• Oil rail pressure sensor
Voltage of oil rail pressure sensor signal • Short circuit of oil rail pressure
P0193
circuit is too high sensor
• ECU
• Cylinder 1
P0201 Open circuit of cylinder 1 injector • Injector wiring harness
• ECU

• Cylinder 2
P0202 Open circuit of cylinder 2 injector • Injector wiring harness
• ECU

Page 2584