DTC Description

P2138 is set when output voltage of APS 2 is above the maximum value of 2.463V for more than 0.18 sec. This code is due to the short to battery in APS 2 power circuit and signal circuit or open in sensor ground circuit.

DTC Detecting Condition

Item

Detecting Condition

Possible Cause

DTC Strategy

Voltage monitoring

1.

APS 2 Circuit

2.

APS component

Enable Conditions

IG key ON (Accelerator pedal depressed)

Threshold Value

When output signal is above the maximum value (above 2463mV)

Diagnostic Time

0.18 sec.

Fail Safe

Fuel cut

NO

APS standard value is 0%.

Limp home idle is fixed at 1200RPM.

EGR Off

NO

Fuel Limit

NO

Check Lamp

ON

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