P1530

Schematic:

The ECM determines the exact position of the throttle butterfly with the use of two independent oppositely scaled sensors. The signal from TPS1 is amplified in the ECM to attain higher resolution and a more precise potentiometer reading. If the amplification value is less than 3.99 volts or greater than 4.32 volts, or the offset value is less than -0.1 volt or greater than 0.1 volt, then the signal is not amplified. In this situation, the vehicle functions without high potentiometer resolution and sets this DTC.

DTC PARAMETERS
This DTC will set when:
^ Amplifier value or offset out of range
^ Vehicle Speed = zero mph
^ Engine Speed less than 250 rpm
^ ECT is between 5°C (41°F) and 100°C (212°F)
^ IAT greater than 5°C (41°F)
^ Battery Voltage greater than 10 volts
^ Pedal Position less than 15%

DTC P1530 is a (type A) DTC

DIAGNOSTIC AIDS
Check for TP sensor DTCs. If present, diagnose those first.

This code indicates a hardware failure may have occurred internal to the ECM. Replace ECM.