Volvo 240 2.3L – 740 2.3L/Turbo – 940 2.3L Turbo (1992 -1995) Trouble Code Info

Model: 240 2.3L    740 2.3L    740 2.3L Turbo 940 2.3L/Turbo
Year: 1992-95
Engine identification: B200F, B200FT, B200G, B204E, B204FT, B230F, B230FB, B230FD, B230FK, B230FT, B230FX, B234~ B52045, B52545
System: Bosch LH-Jetronic 2.4/3.2

Data link connector (DLC)  locations

datalink204-1

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 the LED on the data link connector (DLC).
  • The fuel/ignition/turbocharger control module fault memory can also be checked and erased using diagnostic equipment connected to the data link connector (DLC).

Accessing

Fuel system

  • Ensure ignition switched OFF.
  • Open cover on black data link connector (DLC).
  • Insert selector cable in socket 2 [1] [1].
  • Switch ignition ON.
  • Depress test button for approximately 1 second [1] [2].
  • Count LED flashes [1] [3]. Note trouble code.
  • Each trouble code consists of three groups of flashes [2]
  • A 3 second pause separates each group [2] [A].
  • For example: Trouble code 223 displayed [2] -idle air control (lAC) valve.
  • Repeat switch operation [1] [2]. Note trouble codes. Compare with trouble code table.
  • Switch ignition OFF. Rectify faults as necessary.

NOTE: Maximum of 3 trouble codes can be stored by memory at one time.

240-1240-2

Ignition system

  • Ensure ignition switched OFF.
  • Open cover on black data link connector (DLC).
  • Insert selector cable in socket 6 [3] [1].
  • Switch ignition ON.
  • Depress test button for approximately 1 second  [3][2].
  • Count LED flashes [3]. Note trouble code.
  • Trouble codes are displayed in the same way as those from the fuel system:
o Each trouble code consists of three groups of flashes [2]
o A 3 second pause separates each group [2] [A].
o For example: Trouble code 223 displayed H idle air control (lAC) valve.
  • Repeat switch operation 3 [2]. Note trouble codes. Compare with trouble code table.
  • Switch ignition OFF. Rectify faults as necessary.

NOTE: Maximum of 3 trouble codes can be stored by memory at one time.

Turbocharger (Te) system – B204FT

  • Ensure ignition switched OFF.
  • Open cover on black data link connector (DLC).
  • Insert selector cable in socket 5 [4] [1].
  • Switch ignition ON.
  • Depress test button for approximately 1 second [4] [2].
  • Count LED flashes [4] [3]. Note trouble code.
  • Trouble codes are displayed in the same way as those from the fuel system:
o Each trouble code consists of three groups of flashes [2].
o A 3 second pause separates each group [2] [A].
o For example: Trouble code 223 displayed [2] idle air control (lAC) valve.
  • Repeat switch operation [4] [2]. Note trouble codes. Compare with trouble code table.
  • Switch ignition OFF. Rectify faults as necessary.

NOTE: Maximum of 7 trouble codes can be stored by memory at one time.

240-3240-4

Erasing

  • Ensure ignition switched OFF.
  • Insert selector cable:
o Fuel system- in socket 2 D [1].
o Ignition system- in socket 6 f) [1].
o TC system – in socket 5 a [1].
  • 1 Access trouble codes.

NOTE: Trouble codes must be displayed at least once before they can be erased.

  • Depress test button for approximately 5 seconds.
  • Release test button.
  • Wait for LED to illuminate.
  • Depress test button for approximately 5 seconds.
  • Release test button.
  • Depress test button for approximately 1 second.
  • Ensure trouble code 111 displayed.

Trouble code identification

Flash code Fault location Probable cause
111 No fault found
112 Engine control module (ECM) ECM
113 D Fuel trim (FT) – too weak/rich Intake leak/blockage, excessive fuel in engine oil, fuel pressure, wiring, MAF sensor, H02S
113 f) Fuel trim (FT) – too weak Intake leak, fuel pressure low, wiring, MAF   sensor, H02S
121 Mass air flow (MAF) sensor Wiring, MAF sensor
123 Engine coolant temperature (ECT) sensor Wiring, ECT sensor
131 D Ignition control module (ICM) – engine RPM   signal Wiring
131 a Engine speed (RPM) sensor- no signal Wiring, air gap, RPM sensor
132 Engine control module (ECM) – supply voltage low/high Battery, alternator
133 Throttle position (TP) switch – CTP contacts TP switch adjustment, accelerator cable adjustment, wiring, TP switch
142 Ignition control module (ICM) ICM
143 Knock sensor (KS) 1 Wiring, KS
144 Engine control module (ECM) – load signal Wiring, ECM
154 Exhaust gas recirculation (EGR) system – excessive flow detected Wiring, EGR valve, EGR control module, engine coolant thermostat
212 Heated oxygen sensor (H02S) Wiring, heating inoperative, MAF sensor, H02S
213 Throttle position (TP) switch – WOT contacts TP switch adjustment, accelerator cable adjustment, wiring, TP switch
214 Engine speed (RPM) sensor – intermittent signal Wiring, flywheel/drive plate damaged, air gap, RPM sensor
221 Fuel trim (FT), part load – too weak Intake/exhaust leak, fuel pressure, wiring, MAF sensor, H02S
223 Idle air control (lAC) valve Wiring, lAC valve
224 Engine coolant temperature (ECT) sensor Wiring, ECT sensor
231 D Fuel trim (FT), part load – too weak/rich Intake/exhaust leak, fuel pressure, excessive fuel in engine oil, injector(s), EVAP canister purge valve, wiring, MAF sensor, ECT sensor, HOiZS
231 H Fuel trim (FT), part load – too rich Fuel pressure high, excessive fuel in engine oil, injector(s), EVAP canister purge valve, wiring, MAF sensor, ECT sensor, H02S
232 Fuel trim (FT), idling – weak/rich Intake/exhaust leak, fuel pressure, excessive fuel in engine oil, injector(s), EVAP canister purge valve, wiring, MAF sensor, ECT sensor, H02S
234 Throttle position (TP) switch – CTP contacts TP switch adjustment, accelerator cable adjustment, wiring, TP switch
241 Exhaust gas recirculation (EGR) system – insufficient flow detected Hose leak/blockage, wiring, EGR valve, EGR control module, EGRT sensor, engine coolant thermostat
242 Turbocharger (TC) wastegate regulating valve Wiring, TC wastegate regulating valve
311 Vehicle speed sensor (VSS) Wiring, speedometer, VSS
312 Ignition control module (ICM) – KS signal missing Wiring, ICM
314 Camshaft position (CMP) sensor- no/incorrect signal Wiring, CMP sensor
322 Mass air flow (MAF) sensor – no filament burn- off signal Wiring, ECM
324 Camshaft position (CMP) sensor- intermittent signal Wiring, CMP sensor
342 NC compressor clutch cut-off relay Wiring, A/C compressor clutch cut-off relay
344 Exhaust gas temperature sensor Wiring, EGRT sensor
411 Throttle position (TP) sensor Wiring, TP sensor
413 Exhaust gas recirculation temperature (EGRT)   sensor Wiring, EGRT sensor
421 Manifold absolute pressure (MAP) sensor Hose leak/blockage, Turbocharger (TC), TC control module
422 1:1 Exhaust gas temperature sensor Wiring, exhaust gas temperature sensor
423 Throttle position (TP) sensor Wiring, TP sensor
424 Engine control module (ECM) – load signal Wiring, ECM if trouble code also stored in   ICM
431 Engine coolant blower motor temperature sensor Wiring, engine coolant blower motor temperature sensor
432 Engine control module (ECM) – overheating Engine coolant blower motor, air supply blocked, module cooling fan
433 Knock sensor (KS) 2 Wiring, KS
512 Fuel trim (FT) – too rich Intake blockage, excessive fuel in engine oil, fuel pressure high, wiring, MAF sensor, H02S
513 Engine control module (ECM) – overheating Engine coolant blower motor, air supply blocked, module cooling fan