AUDI A4 1997 B5 / 1.G APB Engine Motronic Syst
Page 61 of 166
01-51
 
DTC  
Description of malfunction  
Corrective action  
SAE  
VAG  
  
  
P1386   17794   Internal Control Module  
Knock Control Circ.Error  - Replace Engine Control Module (ECM)   Page 24
-24
P1387   17795   Internal Control Module  
Altitude Sensor Error
 2)
    
P1388   17796   Internal Control Module  
Drive by wire error 
1) 3)
    
1) With this malfunction the EPC (Electronic Power Control) Malfunction Indicator Light (MIL) in the instrument cluster is 
switched on by the ECM. Significance of EPC malfunction indicator light   Page 24
-142
 .  
2) With this malfunction the exhaust Malfunction Indicator Light (MIL) is only switched on by the ECM, if the malfunction is 
recognized after the engine has been restarted. Significance of MIL   Page 01
-3 .  
3) With this malfunction the exhaust Malfunction Indicator Light (MIL) is switched on by the ECM, immediately after the 
malfunction has been recognized. Significance of MIL   Page 01
-3 .  
Pa
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Page 62 of 166
01-52
 
DTC  
Description of 
malfunction  
Corrective action  
SAE  
VAG  
  
  
P1391   17799   Camshaft Pos. 
Sensor, Bank2  
Short to Ground 
2)  - Check Camshaft Position (CMP) sensor   Page 28
-45
P1392   17800   Camshaft Pos. 
Sensor, Bank2  
Open Circ./Short to B+ 
2)    
P1410   17818   Tank Ventilation Valve 
Circ.  
Short to B+  - Check EVAP canister purge regulator valve   Page 24
-134
P1411   17819   Sec. Air 
Inj.Sys.,Bank2  
Flow too low 
2)  
 Repair Manual, 2.7 Liter V6 5V BiTurbo Engine Mechanical, Engine Code(s): 
APB, Repair Group 26, Exhaust system, Secondary air injection system
    - Check fuse for secondary air injection pump.
- Check vacuum hoses
- Check piping from pump to secondary air injection valve (Combi valve)
P1414   17822   Sec. Air 
Inj.Sys.,Bank2  
Leak Detected 
2)  
 Repair Manual, 2.7 Liter V6 5V BiTurbo Engine Mechanical, Engine Code(s): 
APB, Repair Group 26, Exhaust system, Secondary air injection system
    - Check piping from pump to secondary air injection valve (combi valve) bank 2Pa
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Page 63 of 166
2) With this malfunction the exhaust Malfunction Indicator Light (MIL) is only switched on by the ECM, if the malfunction is 
recognized after the engine has been restarted. Significance of MIL   Page 01
-3 .  
Pa
ge 63 of 166 Motronic s
ystem, On Board Dia
gnostic 
(OBD
)
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Page 64 of 166
01-53
 
DTC  
Description of 
malfunction  
Corrective action  
SAE  
VAG  
  
  
P1420   17828   Sec. Air Inj. Valve 
Circ.  
Electrical 
Malfunction 
2)  - Check Secondary Air Injection (AIR) Solenoid Valve -N112
P1421   17829   Sec. Air Inj. Valve 
Circ.  
Short to Ground 
2)   Repair Manual, 2.7 Liter V6 5V BiTurbo Engine Mechanical, Engine Code(s): APB, 
Repair Group 26, Exhaust system, Secondary air injection system, Checking Secondary Air Injection (AIR) Solenoid Valve 
-N112
   
P1422   17830   Sec. Air Inj. Valve 
Circ.  
Short to B+ 
2)    
2) With this malfunction the exhaust Malfunction Indicator Light (MIL) is only switched on by the ECM, if the malfunction is 
recognized after the engine has been restarted. Significance of MIL   Page 01
-3 .  
Pa
ge 64 of 166 Motronic s
ystem, On Board Dia
gnostic 
(OBD
)
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Page 65 of 166
01-54
 
DTC  
Description of 
malfunction  
Corrective action  
SAE  
VAG  
  
  
P1423   17831   Sec. Air 
Inj.Sys.,Bank1  
Flow too low 
2)  
 Repair Manual, 2.7 Liter V6 5V BiTurbo Engine Mechanical, Engine Code(s): 
APB, Repair Group 26, Exhaust system, Secondary air injection system
    - Check fuse for secondary air injection pump
- Check vacuum hoses
- Check piping from pump to secondary air injection valve (Combi valve)
P1424   17832   Sec. Air Inj. Sys., 
Bank1  
Leak Detected 
2)  
 Repair Manual, 2.7 Liter V6 5V BiTurbo Engine Mechanical, Engine Code(s): 
APB, Repair Group 26, Exhaust system, Secondary air injection system
    - Check piping from pump to secondary air injection valve (Combi valve) bank 1
P1425   17833   Tank Vent. Valve  
Short to Ground 
2)  - Check EVAP canister valve 1   Page 24
-134
P1426   17834   Tank Vent. Valve  
Open 
2)    
2) With this malfunction the exhaust Malfunction Indicator Light (MIL) is only switched on by the ECM, if the malfunction is 
recognized after the engine has been restarted. Significance of MIL   Page 01
-3 .  
Pa
ge 65 of 166 Motronic s
ystem, On Board Dia
gnostic 
(OBD
)
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Page 66 of 166
01-55
 
DTC  
Description of 
malfunction  
Corrective action  
SAE  
VAG  
  
  
P1432   17840   Sec. Air Inj.Valve  
Open 
2)  
 Repair Manual, 2.7 Liter V6 5V BiTurbo Engine Mechanical, Engine Code(s): 
APB, Repair Group 26, Exhaust system, Secondary air injection system, Checking Secondary Air Injection (AIR) Solenoid Valve 
-N112
    - Check Secondary Air Injection (AIR) Solenoid Valve -N112
P1433   17841   Sec. Air Inj. Sys. 
Pump Relay Circ.  
Open 
2)   Repair Manual, 2.7 Liter V6 5V BiTurbo Engine Mechanical, Engine Code(s): 
APB, Repair Group 26, Exhaust system, Secondary air injection system, Checking Secondary Air Injection (AIR) Pump Relay 
-J299
   
P1434   17842   Sec. Air Inj. Sys. 
Pump Relay Circ.  
Short to B+ 
2)    
P1435   17843   Sec. Air Inj. Sys. 
Pump Relay Circ.  
Short to Ground 
2)    
2) With this malfunction the exhaust Malfunction Indicator Light (MIL) is only switched on by the ECM, if the malfunction is 
recognized after the engine has been restarted. Significance of MIL   Page 01
-3 .  
Pa
ge 66 of 166 Motronic s
ystem, On Board Dia
gnostic 
(OBD
)
11/22/2002 htt
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yp
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pair&id=AUDI.B5.FU04.01.1 
Page 67 of 166
01-56
 
DTC  
Description of malfunction  
Corrective action  
SAE  
VAG  
  
  
P1453   17861   Exhaust gas temperature 
sensor 1  
Open/short to B+   Repair Manual, 2.7 Liter V6 5V BiTurbo Engine Mechanical, Engine 
Code(s): APB,Repair Group 26, Checking Sensor 
-1- for exhaust 
temperature
   
P1454   17862   Exhaust gas temperature 
sensor 1  
Short to ground    
P1455   17863   Exhaust gas temperature 
sensor 1  
Range/performance    
P1456   17864   Exhaust gas temperature 
control bank 1  
Limit attained   Repair Manual, 2.7 Liter V6 5V BiTurbo Engine Mechanical, Engine 
Code(s): APB,Repair Group 26, Checking exhaust gas temperature control
 
  
P1457   17865   Exhaust gas temperature 
sensor 2  
Open/short to B+   Repair Manual, 2.7 Liter V6 5V BiTurbo Engine Mechanical, Engine 
Code(s): APB,Repair Group 26, Checking Sensor 
-2- for exhaust 
temperature
   
P1458   17866   Exhaust gas temperature 
sensor 2  
Short to ground    
P1459   17867   Exhaust gas temperature   
Pa
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)
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Page 68 of 166
sensor 2  
Range/performance  
P1460   17868   Exhaust gas temperature 
control bank 2  
Limit attained   Repair Manual, 2.7 Liter V6 5V BiTurbo Engine Mechanical, Engine 
Code(s): APB,Repair Group 26, Checking exhaust gas temperature control
 
  
Pa
ge 68 of 166 Motronic s
ystem, On Board Dia
gnostic 
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)
11/22/2002 htt
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Page 69 of 166
01-57
 
DTC  
Description of malfunction  
Corrective action  
SAE  
VAG  
  
  
P1461   17869   Exhaust gas temperature 
control bank 1  
Range/Performance   Repair Manual, 2.7 Liter V6 5V BiTurbo Engine Mechanical, Engine 
Code(s): APB, Repair Group 26, Checking exhaust gas temperature control
   
P1462   17870   Exhaust gas temperature 
control bank 2  
Range/Performance    
Pa
ge 69 of 166 Motronic s
ystem, On Board Dia
gnostic 
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)
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Page 70 of 166
01-58
 
DTC  
Description of 
malfunction  
Corrective action  
SAE  
VAG  
  
  
P1470   17878   EVAP Emission Contr. 
LDP Circ  
Electrical Malfunction 
2)  - Check Leak Detection Pump (LDP) 
P1471   17879   EVAP Emission Contr. 
LDP Circ  
Short to B+ 
2)   Repair Manual, Fuel Supply System, Repair Group 20, Components of EVAP 
system servicing, Checking Leak Detection Pump (LDP) 
-V144
   
P1472   17880   EVAP Emission Contr. 
LDP Circ  
Short to Ground 
2)    
P1473   17881   EVAP Emission Contr. 
LDP Circ  
Open Circuit 
2)    
2) With this malfunction the exhaust Malfunction Indicator Light (MIL) is only switched on by the ECM, if the malfunction is 
recognized after the engine has been restarted. Significance of MIL   Page 01
-3 .  
Pa
ge 70 of 166 Motronic s
ystem, On Board Dia
gnostic 
(OBD
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.01.1