ON-BOARD DIAGNOSTIC
01–02–17
01–02
P0506 Idle speed control system RPM lower than expected
• Actual idle speed is lower than expected by 100 rpm for 14 s, when brake pedal is depressed (brake switch is
on) and steering wheel is held straight ahead (power steering pressure (PSP) switch is off).
P0507 Idle speed control system RPM higher than expected
• Actual idle speed is higher than expected by 200 rpm for 14 s, when the brake pedal is depressed (brake
switch is on) and steering wheel is held straight ahead (power steering pressure (PSP) switch is off).
P0550 PSP switch circuit malfunction
• The PCM monitors PSP switch signal at PCM terminal 2T. If input voltage is low voltage (switch stays on) for 1
min. when the VSS is above 60.0 km/h {37.4 mph} and ECT is above 60 °C {140 °F}, the PCM determines
that PSP switch circuit has malfunction.
P0564 Cruise control switch circuit malfunction
• The PCM monitors the cruise control switch signal at PCM terminal 1AQ. If the PCM detects that any one of
following switches (ON OFF, SET/-, SET/COAST, RES/+) remains on for 2 min, the PCM determines that the
cruise control switch circuit has a malfunction.
P0571 Brake switch circuit problem
• The PCM monitors changes in input voltage for brake switch No.1 and No.2. If the PCM detects that both brake
switches No.1 and No.2 remain on or off for 15 s, it determines that the brake switch circuit has a malfunction.
P0601 PCM memory check sum error
• PCM internal memory check sum error
P0602 PCM programming error
• No configuration data in the PCM
P0604 PCM random access memory (RAM) error
• PCM internal RAM malfunction.
P0606 PCM processor
• The PCM internal CPU malfunction
P0610 PCM vehicle options error
• PCM data configuration error
P0638 Throttle actuator control circuit range/performance problem
• The PCM compares the actual TP with the target TP when the engine is running. If the difference is more than
the specification, the PCM determines that there is a throttle actuator control circuit range/performance
problem.
P0661 Variable intake air solenoid valve circuit low input
• The PCM monitors the variable intake air solenoid valve control signal. If the PCM turns variable intake air
solenoid valve off but voltage at PCM terminal still remains low, the PCM determines that variable intake air
solenoid valve circuit has malfunction.
P0662 Variable intake air solenoid valve circuit high input
• The PCM monitors the variable intake air solenoid valve control signal at PCM terminal. If the PCM turns
variable intake air solenoid valve on but voltage at PCM terminal still remains high, the PCM determines that
the variable intake air solenoid valve circuit has malfunction.
P0703 Brake switch input circuit problem
• The PCM monitors changes in input voltage from the brake switch No.1. If the PCM does not the voltage
changes while alternately accelerating and decelerating 8 times, the PCM determines that the brake switch
No.1 circuit has a malfunction.
P0704 Clutch pedal position (CPP) switch input circuit problem
• The PCM monitors changes in input voltage from the CPP switch. If the PCM does not detect the voltage
changes while the vehicle runs with vehicle speed above 30 km/h {19 mph} and stops 8 times alternately, the
PCM determines that the CPP switch circuit has a malfunction.
P0850 Neutral switch input circuit problem
• The PCM monitors changes in input voltage from the neutral switch. If the PCM does not detect the voltage
changes while driving the vehicle at a vehicle speed above 30 km/h {19 mph} and clutch pedal turns press
and depress 10 times repeatedly, the PCM determines that the neutral switch circuit has a malfunction
P1260 Immobilizer system problem
• The instrument cluster detects an immobilizer system malfunction.
P2088 Oil control valve (OCV) circuit low
• The PCM monitors the OCV voltage. If the PCM detects the OCV control voltage (calculated from the OCV) is
below the threshold voltage (calculated from the battery positive voltage), the PCM determines that the OCV
circuit has a malfunction.
P2089 Oil control valve (OCV) circuit high
• The PCM monitors the OCV voltage. If the PCM detects that the OCV control voltage (calculated from the
OCV) is above the threshold voltage (calculated from battery positive voltage), the PCM determines that the
OCV circuit has a malfunction.
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