Volkswagen Passat 1995 Official Factory Repair Manual page 1586

Diagnostic Trouble Code (DTC) tables:
SAE- DTC text
DTC
P1136 Bank 1, mixture adaption
(add.) system too lean
P1137 Bank 1, mixture adaption
(add.) system too rich
Note:
add. = additive, means that malfunction is only valid at closed throttle (idle)
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Corrective action
- Check fuel pressure regulator and residual
pressure Page 24-78
- Check Cylinder 1 Fuel Injector -N30- to Cylinder 4
Fuel Injector -N33-
- Check intake system for leaks (false air)
24-84
- Check Fuel Pump (FP) -G6-
- Check exhaust system for proper seal
1 , removing and installing exhaust system
components
- Check Secondary Air Injection (AIR) system for
proper seal Page 26-18
- Check vacuum lines for leaks
- Check fuel pressure regulator and residual
pressure Page 24-78
- Check Cylinder 1 Fuel Injector -N30- to Cylinder 4
Fuel Injector -N33-
- Check Evaporative Emission (EVAP) Canister
Purge Regulator Valve -N80-
Page 24-65
Page 20-15
Page 26-
Page 24-65
Page 20-34
Page 24 of 41
ST-79
Page
6/12/2004