Volkswagen Jetta 2.0L – Passat 2.0L (1992 – 1993) Trouble Code Info

Model: Jetta 2.0L    Passat 2.0L
Year: 1992-93
Engine identification: 9A
System: Bosch KE-Motronic 1.2/1.2.1/1.2.2

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General information

  • Refer to the front of this manual for general test conditions, terminology, detailed descriptions of wiring faults and a general trouble shooter for electrical and mechanical faults.
  • Trouble codes are displayed by using an LED connected to the data link connector (DLC).
  • The ECM fault memory can also be checked and erased using diagnostic equipment connected to the data link connector (DLC).
  • Self-diagnosis using flash type trouble codes may not display all available diagnostic information.
  • Carry out road test for at least 5 minutes.
  • Briefly fully depress throttle pedal to increase engine speed over 3000 rpm.
  • Allow to idle for 2 minutes.
  • If engine does not start: Crank engine for 6 seconds.
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Accessing

  • Ensure ignition switched OFF.
  • Connect LED test lamp between black data link connector (DLC) terminal 2 [1] [A] and blue data link connector (DLC) terminal 2 [1] [C].
  • Jump black data link connector (DLC) terminal 1 [1] [A] and brown/white/yellow data link connector (DLC) terminal 1 [1] [B] with a switched lead – contacts normally open.
  • Switch ignition ON.
  • Operate switch for 4-6 seconds.
  • Release switch. Check that LED flashes.
  • Count LED flashes. Note trouble code.
  • Each trouble code consists of four groups of one to four flashes.
  • A 2.5 second pause separates each trouble code group [2] [A].
  • Repeat switch operation. Note trouble codes. Compare with trouble code table.
  • End of test sequence indicated by trouble code 0000 (long flashes).
  • Switch ignition OFF. Rectify faults as necessary.

Erasing

  • Ensure ignition switched OFF.
  • Connect LED test lamp between black data link connector (DLC) terminal 2 [1] [A] and blue data link connector (DLC) terminal 2 [1] [C].
  • Jump black data link connector (DLC) terminal 1 [1] [A] and brown/white/yellow data link connector (DLC) terminal 1 [1] [B] with a switched lead – contacts normally open.
  • Access trouble codes. Switch ignition OFF.
  • Operate switch. Switch ignition ON after 4-6 seconds.
  • Release switch after 4-6 seconds. Check that LED flashes.
  • Differential pressure regulator activated. Trouble code displayed: 4341.
  • Operate switch for 4-6 seconds to activate each of the following components:
  • Evaporative emission (EVAP) canister purge valve. Trouble code displayed: 4343.
  • Idle air control (lAC) valve. Trouble code displayed: 4431.
  • Cold start injector. Trouble code displayed: 4443.
  • After activation of last component operate switch for 4-6 seconds to display flash code 0000 (long flashes).
  • Operate switch for 4-6 seconds to erase fault memory.
  • Repeat checking procedure to ensure no data remains in ECM fault memory.

Trouble code identification

Flash code 4-digit Fault location Probable cause
0 End of test sequence
1111 Engine control module (ECM) ECM
1231 Vehicle speed sensor (VSS) Wiring, speedometer, VSS
2112 Camshaft position (CMP) sensor, cylinder 4 HT   lead CMP sensor tabs not facing towards distributor, spark plug(s), HT lead(s), distributor cap/rotor, wiring, CMP sensor
2113 Crankshaft position (CKP) sensor Insecure rotor, wiring, CKP sensor, volume air flow (VAF) sensor plate tight/sticking
2121 Closed throttle position (CTP) switch Accelerator cable adjustment, CTP switch adjustment, throttle valve tight/sticking, wiring, CTP switch
2123 Wide open throttle (WOT) switch Accelerator cable adjustment, WOT switch adjustment, wiring, WOT switch
2141 Knock control – control limit exceeded Incorrect fuel/compression, ignition timing, screening of KS wiring, insecure engine component
2142 Knock sensor (KS) 1 Wiring, KS, ECM
2144 Knock sensor (KS) 2 Wiring, KS, ECM
2231 Idle speed control (ISC) Ignition timing, EVAP canister purge valve   1/2, intake leak, VAF sensor, throttle valve adjustment, AJC signal missing, wiring
2232 Volume air flow (VAF) sensor Wiring, VAF sensor
2312 Engine coolant temperature (ECT) sensor Wiring, poor connection, ECT sensor
2341 Heated oxygen sensor (H02S) – lambda control Mixture adjustment, oxygen sensor heater/ wiring, cold start injector, EVAP canister purge valve, intake/exhaust leak, ECM ground wire to intake manifold
2342 Heated oxygen sensor (H02S) Wiring, H02S, heating inoperative
4431 Idle air control (lAC) valve Wiring, lAC valve, ECM
4444 No fault found
 
VAG code 5-digit Fault location Probable cause
00000 No fault found
00281 Vehicle speed sensor (VSS) Wiring, speedometer, VSS
00514 Camshaft position (CMP) sensor, cylinder 4 HT   lead CMP sensor tabs not facing towards distributor, spark plug(s), HT lead(s), distributor cap/rotor, wiring, CMP sensor
00515 Crankshaft position (CKP) sensor Insecure rotor, wiring, CKP sensor, volume air flow (VAF) sensor plate tight/sticking
00516 Closed throttle position (CTP) switch Accelerator cable adjustment, CTP switch adjustment, throttle valve tight/sticking, wiring, CTP switch
00517 Wide open throttle (WOT) switch Accelerator cable adjustment, wiring, WOT   switch
00520 Volume air flow (VAF) sensor Wiring, VAF sensor
00522 Engine coolant temperature (ECT) sensor Wiring, poor connection, ECT sensor
00524 Knock sensor (KS) 1 Wiring, KS, ECM
00525 Heated oxygen sensor (H02S) Wiring, H02S, heating inoperative
00533 Idle speed control (ISC) Ignition timing, EVAP canister purge valve   1/2, intake leak, VAF sensor, throttle valve adjustment, A/C signal missing, wiring
00535 Knock control – control limit exceeded Incorrect fuel/compression, ignition timing, screening of KS wiring, insecure engine component
00537 Heated oxygen sensor (H02S) – lambda control Mixture adjustment, oxygen sensor heater/ wiring, cold start injector, EVAP canister purge valve, intake/exhaust leak, ECM ground wire to intake manifold
00540 Knock sensor (KS) 2 Wiring, KS, ECM
00558 Mixture control (MC) – mixture lean ECM ground wire to intake manifold, intake leak, idle speed adjustment
00559 Mixture control (MC) – mixture rich lnjector(s), cold start injector, idle speed adjustment
00587 Mixture control (MC) ECM ground wire to intake manifold, intake leak, idle speed adjustment, injector(s}, cold start injector
001257 Idle air control (lAC) valve Wiring, lAC valve, ECM
17978 Engine control module (ECM) – immobilizer active Incorrect/damaged key, incorrectly coded, ECM/immobilizer replacement without coding, wiring, immobilizer defective
65535 Engine control module (ECM) ECM