VR VS VT 5 litre V8 diagnostic codes, some may apply to The buick and ecotec. Fault Code Table
Code # Circuit and Status
12* No RPM Signal
(OK Stationary Engine)
13 No Oxygen Sensor Signal
14 ECT Sensor Voltage Low -auto trans code
15 ECT Sensor Voltage High -auto trans code
16* ECT Sensor Voltage Unsteady
17* PCM Error
19 TPS Stuck Open
21 TPS Voltage High -auto trans code
22 TPS Voltage Low -auto trans code
23* IAT Voltage High
24 No Vehicle Speed Sensor -auto trans code
25* IAT Voltage Low
26* IAT Voltage Unstable
28 Pressure Switch Assembly Short
Circuit -auto trans code 31 Theft Deterrent Signal Missing
33 MAP Signal Voltage High
34 MAP Signal Voltage Low
35* Idle Speed Error
36* Vacuum Leak
41 EST Output Circuit Failure
42 Ignition Bypass Circuit Failure
43* Knock Sensor Fault
44 Exhaust Lean Indication
45 Exhaust Rich Indication
46 No Reference Pulses While Cranking
47* 18X Reference Signal Missing.
48* Crankshaft Reference Signal Missing
49* Crank Signal Intermittent
51 PROM Error
52 System Voltage High -auto trans code
16 Volts for 109 Minutes
53 System Voltage High -auto trans code
19.5 Volts for 2 Seconds
54 System Voltage Unstable
55 Analogue to Digital Error -auto trans code
56* Running Lean Under Load
57 Injector Voltage Monitor Fault
58* Transmission Fluid Temperature -auto
trans code Voltage Low
59 Transmission Fluid Temperature -auto trans code
Voltage High
66 3-2 Shift Control Solenoid Circuit Fault -auto trans code
67 TCC ON-OFF Solenoid Control Circuit -auto trans code
68 Transmission Component Slipping -auto trans code
69* TCC Stuck ON -auto trans code
72 Vehicle Speed Sensor
Intermittent While Driving
73 Pressure Control Solenoid Current -auto trans code
75 System Voltage Low -auto trans code
79 Transmission Fluid Temperature -auto trans code Too High
81 2-3 Shift Solenoid “B” Fault -auto trans code
82 1-2 Shift Solenoid “A” Fault -auto trans code
83* TCC PWM Solenoid Fault -auto trans code