DTC Code
Description
Diagnostic Procedures
P2187
Air-Fuel Ratio Closed-loop Control self learn
Higher Than Maximum Limit (Low-Load
Zone)
Refer to
DTC P0170 P0171 P0172 P2177 P2178 P2187
P2188
Air-Fuel Ratio Closed-loop Control self learn
Lower Than Minimum Limit (Low-Load
Zone)
P2195
Pre-Catalytic Oxygen Sensor Aging (Too
Lean)
Refer to
DTC P0130 P0131 P0132 P0133 P0134 P2195
P2196
Pre-Catalytic Oxygen Sensor Aging (Too
Rich)
P2270
Post-Catalytic Oxygen Sensor Aging (Too
Lean)
Refer to
DTC P0136 P0137 P0138 P0140 P2270 P2271
P2271
Post-Catalytic Oxygen Sensor Aging (Too
Rich)
U0001
CAN High-Speed Communication Bus
Malfunction
Refer to
DTC P1523 U0001 U0121 U0140 U0151
U0121
Communication With ABS Controller
Interrupted
U0140
Communication With BCM Interrupted
U0151
Communication With airbag control module
Interrupted
2.2.7.12 DTC P0010 P2088 P2089
1. DTC Descriptor:
DTC
P0010
VVT Intake Control Solenoid Valve Circuit Open
DTC
P2088
VVT Intake Control Solenoid Valve Circuit Short to Ground
DTC
P2088
VVT Intake Control Solenoid Valve Circuit Short to Power Supply
The intake camshaft position actuator is connected to the intake camshaft and operated by hydraulic pressure. The hydraulic
pressure is provided by the engine oil pump in order to change the intake camshaft to the crankshaft relative position (CKP ) angle.
The intake VVT solenoid valve power supply is provided by The Main Relay. ECM modulates the pulse-width to control signal ground,
thus controlling the camshaft position actuator engine oil flow. Engine oil pressure moves the camshaft position actuator slide valve
at the front of the camshaft. When the safety slide valve is operated, the engine oil is imported into the camshaft position actuator,
so that camshaft rotates. The intake camshaft cam actuator can change the camshaft working angle up to 50°.
ECM controls the solenoid valve internal ground by ECM harness connector EN01 terminal No.2. There is a feedback circuit within
ECM. ECM monitors the feedback signals to determine whether there is an open control circuit, or a short to ground circuit or a short
to power supply circuit. If ECM detects the control circuit voltage is within a predetermined range, when being disconnected, this
DTC code is set.
Engine
Control System JL4G18-D
2-69
EC718/EC718RV EC715/EC715RV 10/2009
Summary of Contents for EC715 2009
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