LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Plymouth >> 1990 >> Acclaim LX >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 2.5L >> Diagnostic Trouble Code (DTC) Identification >> Notes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnostic Trouble Code (DTC) Identification: Notes

DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION (NON-TURBO)

Code Display on DRB-II Fault Condition
11 IGN Reference Signal No distributor reference signal pickup during cranking.
12 Number of Key-Ons Since Last Fault Or Since Faults Were Released Direct battery input to SBEC was disconnected within last 50-100 ignition key-ons.
13  Map Pneumatic Signal No difference in MAP sensor signal is detected.
13  Map Pneumatic Change No difference is detected between MAP reading & stored barometric pressure reading.
14  Map Voltage Too Low MAP sensor input less than minimum acceptable voltage.
14  Map Voltage Too High MAP sensor input more than maximum acceptable voltage.
15  Vehicle Speed Signal No distance sensor signal detected with road load conditions.
17 Low Engine Temp Coolant temperature stays below normal operating temperature during vehicle operation.
21  O2 Sensor Signal No rich or lean signal is detected from O2 sensor input.
21  O2 Sensor Shorted Hi Oxygen sensor input voltage maintained above normal operating range.
22  Coolant Voltage Low Coolant temperature sensor input below minimum acceptable voltage.
22  Coolant Voltage High Coolant temperature sensor input above maximum acceptable voltage.
23  (1) T/B Temp Voltage Low Throttle body temperature sensor input below minimum acceptable voltage.
23  (1) T/B Temp Voltage Hi Throttle body temperature sensor input above maximum acceptable voltage.
24  TPS Voltage Low TPS sensor output less than minimum acceptable voltage.
24  TPS Voltage High TPS sensor output more than maximum acceptable voltage.
25  AIS Motor Circuits Shorted condition detected in one or more Auto Idle Speed control circuits.
31  Purge Solenoid Ckt Open or shorted condition is detected in purge solenoid circuit.
32  EGR Solenoid Circuit Open or shorted condition is detected in EGR solenoid circuit (CA only).
32  EGR System Failure SBEC did not detect required air/fuel change during diagnostic test (CA only).
33  A/C Clutch Relay Ckt (Except "C" Body) Open or shorted condition detected in A/C clutch relay circuit.
33  A/C Clutch Relay Ckt ("C" Body) Open or shorted condition detected in A/C clutch relay circuit.
34 S/C Servo Solenoids Open or shorted condition detected in speed control vacuum or vent solenoid circuits.
35  Radiator Fan Relay (Except "C" Body) Open or shorted condition detected vacuum or vent solenoid circuits.
35  Radiator Fan Relay ("C" Body) Open or shorted condition detected vacuum or vent solenoid circuits.
37  PTU Solenoid Circuit Open or shorted condition detected in torque converter part throttle unlock solenoid circuit.
41 Alternator Field Ckt Open or shorted condition
42 ASD Relay Circuit Open or shorted condition detected in alternator field circuit.detected in ASD relay circuit.
43 Ignition Coil #1 Circuit Output Driver For Ignition Coil Does Not Respond Properly To The Dwell Control Signal.
46 Battery Voltage High Battery voltage sense input more than target charging voltage during engine operation.
47 Charging Output Low Battery voltage sense input less than target charging voltage during engine operation and no significant change in voltage detected during active test of alternator output.
51  Lean F/A Condition O2 sensor input indicates lean 51 air/fuel ratio during engine operation.
52 Rich F/A Condition O2 sensor input indicates rich air/fuel ratio during engine operation.
53 Internal Self-Test  
SBEC detects internal failure.
55 (2) Completion of fault code display by check engine light.
62  EMR Miles Not Stored Unsuccessful attempt to update EMR mileage in SBEC EEPROM (trucks only).
63  EEPROM Write Denied Unsuccessful attempt to write to an EEPROM location by SBEC.
N/A Fault Code Error DRB-II does not recognize fault identification
(1) Single-point fuel injection.
(2) No display on DRB-II.
DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION (TURBO)

Code Display on DRB-II Fault Condition
11 IGN Reference Signal No distributor reference signal pickup during cranking.
12 Number of Key-Ons Since Last Fault Or Since Faults Were Released Direct battery input to SBEC was disconnected within last 50-100 ignition key-ons.
13  Map Pneumatic Signal No difference in MAP sensor signal is detected.
13  Map Pneumatic Change No difference is detected between MAP reading & stored barometric pressure reading.
14  Map Voltage Too Low MAP sensor input less than minimum acceptable voltage.
14  Map Voltage Too High MAP sensor input more than maximum acceptable voltage.
15  Vehicle Speed Signal No distance sensor signal detected with road load conditions.
17 Low Engine Temp Coolant temperature stays below normal operating temperature during vehicle operation.
21  O2 Sensor Signal No rich or lean signal is detected from O2 sensor input.
21  O2 Sensor Shorted Hi Oxygen sensor input voltage maintained above normal operating range.
22  Coolant Voltage Low Coolant temperature sensor input below minimum acceptable voltage.
22  Coolant Voltage High Coolant temperature sensor input above maximum acceptable voltage.
24  TPS Voltage Low TPS sensor output less than minimum acceptable voltage.
24  TPS Voltage High TPS sensor output more than maximum acceptable voltage.
25  AIS Motor Circuits Shorted condition detected in one or more Auto Idle Speed control circuits.
27  INJ 1 Control Circuit INJ 1 injector bank output driver stage does not respond correctly to SBEC control signal.
27  INJ 2 Control Circuit INJ 2 injector bank output driver stage does not respond correctly to SBEC control signal.
27  INJ 3 Control Circuit INJ 3 injector bank output driver stage does not respond correctly to SBEC control signal.
27  INJ 4 Control Circuit INJ 4 injector bank output driver stage does not respond correctly to SBEC control signal.
31  Purge Solenoid Ckt Open or shorted condition is detected in purge solenoid circuit.
32  EGR Solenoid Circuit (With California Emissions Only) Open or shorted condition is detected in EGR solenoid circuit (CA only).
32  EGR System Failure (With California Emissions Only) SBEC did not detect required air/fuel change during diagnostic test (CA only).
33  A/C Clutch Relay Ckt Open or shorted condition detected in A/C clutch relay circuit.
34 S/C Servo Solenoids Open or shorted condition detected in speed control vacuum or vent solenoid circuits.
35  Radiator Fan Relay Open or shorted condition detected vacuum or vent solenoid circuits.
36 Wastegate Solenoid Open or shorted condition detected in turbocharger wastegate control solenoid circuit.
37 PTU Solenoid Circuit Open or shorted condition detected in torque converter part throttle unlock solenoid circuit.
41 Alternator Field Ckt Open or shorted condition
42  (1) Z1 Voltage Sense No battery voltage sensed when ASD relay is energized.
45 (1) Boost Limit Exceeded MAP reading above overboost limit detected during engine operation.
46 Battery Voltage High Battery voltage sense input more than target charging voltage during engine operation.
47 Charging Output Low Battery voltage sense input less than target charging voltage during engine operation and no significant change in voltage detected during active test of alternator output.
51  Lean F/A Condition O2 sensor input indicates lean 51 air/fuel ratio during engine operation.
52 Rich F/A Condition O2 sensor input indicates rich air/fuel ratio during engine operation.
53 Internal Self-Test  
SBEC detects internal failure.
54 (1) Sync Pick-Up Signal No high data rate detected during engine rotation.
55 (2) Completion of fault code display by check engine light.
61 (1) Baro Read Solenoid Open or shorted condition detected in baro read solenoid circuit.
62  EMR Miles Not Stored Unsuccessful attempt to update EMR mileage in SBEC EEPROM (trucks only).
63  EEPROM Write Denied Unsuccessful attempt to write to an EEPROM location by SBEC.
N/A Fault Code Error DRB-II does not recognize fault identification
(1) Multi-point fuel injection.
(2) No display on DRB-II.
scientia non olet · About LEMON Manuals