Volkswagen Passat 1995 Official Factory Repair Manual page 1754

VAG 1551 Scan Tool (ST), connecting and selecting 'Engine Electronics' address word 01
Diagnostic Trouble
Code (DTC)
SAE VAG
P0120 16504
P0121 16505
P0122 16506
P0125 16509
P0131 16515
P0132 16516
P0133 16517
P0134 16518
http://ebahn.bentleypublishers.com/vw/servlet/Display?action=Goto&type=repair&id=VW.B4.FU07....
Malfunction text
Throttle Position Sensor A
Circuit Malfunction
Throttle Position Sensor A
Circuit Range/Performance
Problem
Throttle Position Sensor A
Circuit Low Input
Insufficient Coolant
Temperature for Closed Loop
Fuel Control
O Sensor Circuit Low Voltage
2
(Bank 1, Sensor 1)
O Sensor Circuit High Voltage
2
(Bank 1, Sensor 1)
O Sensor Circuit Slow
2
Response (Bank 1, Sensor 1)
O Sensor Circuit No Activity
2
Detected (Bank 1, Sensor 1)
Malfunction elimination
- Check throttle valve control module
Page 24-68
- Check MAF sensor
- Check ECT sensor
- Check thermostat
Repair Manual, 2.8 Liter VR6 2V Engine
Mechanical, Engine Code(s): AAA, Repair
Group 19
- Check Heated Oxygen Sensor (HO2S)
and Oxygen Sensor (O2S) control (before
three way catalytic converter)
25
- Check O2S aging and HO2S (before
three way catalytic converter)
56
- Check HO2S and O2S control (after three
way catalytic converter)
Page 9 of 77
01-15
Page 24-62
Page 24-88
Page 24-
Page 24-
Page 24-42
12/6/2004