Trouble Code Definition

PCM TROUBLE CODE DEFINITION

Code No.

Circuit Affected

12 ⁽¹⁾

No RPM Reference Pulse

Vehicle Speed Sensor

Throttle Position Switch Voltage High

Throttle Position Switch Voltage Low

Vehicle Speed Sensor Signal Low

Oil Pressure Switch Assembly Problem

⁽³⁾⁽⁴⁾⁽⁵⁾ TCC Stuck OFF

Transmission Temperature High

Transmission Temperature Low

⁽⁵⁾ 3-2 Control Solenoid Circuit

⁽⁵⁾ TCC Solenoid Circuit

⁽³⁾⁽⁴⁾⁽⁵⁾ Transmission Slipping

⁽⁵⁾ TCC Stuck ON

Vehicle Speed Sensor Loss

⁽²⁾ Pressure Control Solenoid Problem

⁽²⁾⁽³⁾⁽⁴⁾ Transmission Input Speed Sensor Circuit

Transmission Fluid Too Hot

⁽³⁾⁽⁷⁾ Transmission Slipping

⁽²⁾ Shift Solenoid "B" Circuit Error

⁽²⁾ Shift Solenoid "A" Circuit Error

⁽³⁾⁽⁴⁾ TCC Solenoid Circuit Error

⁽²⁾ 3-2 Control Solenoid Circuit

⁽³⁾⁽⁴⁾ Undefined Ratio Error Problem

⁽²⁾⁽⁷⁾ TCC Stuck ON

⁽³⁾⁽⁴⁾ Low Ratio Error Problem

⁽³⁾⁽⁴⁾ High Ratio Error Problem

⁽⁶⁾⁽⁷⁾ TCC Stuck ON

⁽⁶⁾ Pressure Control Solenoid Problem

⁽¹⁾	Display of a Code 12 is normal when no reference pulses are received by control module (engine not running).

⁽²⁾	Not on 3.4L Camaro and Firebird.

⁽³⁾	Applies to 1994 model year.

⁽⁴⁾	Applies to "C" and "K" light trucks only.

⁽⁵⁾	Not on passenger cars.

⁽⁶⁾	Used on 3.4L Camaro and Firebird only.

⁽⁷⁾	Used on passenger cars.

NOTE: Only transmission-mounted components related to transmission trouble codes are listed. If other trouble codes are present, see appropriate TESTS W/CODES article in ENGINE PERFORMANCE section.