The document lists OBD1 codes for Dodge, Chrysler, and Jeep vehicles, detailing various fault codes related to fuel delivery and engine performance. Each code includes its condition type (carb or injected) and descriptions of potential issues, such as problems with sensors, circuits, and control systems. The document provides a comprehensive reference for diagnosing vehicle malfunctions using OBD1 codes.

1. Dodge, Chrysler, and Jeep OBD1 Codes List
Code
Fuel
Delivery
Type Description
00 Carb Due to power on, C.D.R. switch in read position
88 Carb Begin fault code display
11 Carb
Oxygen Feedback Solenoid circuit (mixture control
solenoid)
11 Injected
No Distributor Reference Signal Detected During
Cranking (CMP)
12 Carb Transmission (TCC) unlock relay circuit
13 Carb
Air Switching Solenoid circuit or Vacuum operated
secondary solenoid circuit
13 Injected
1. Manifold Absolute Pressure (MAP) Sensor Output
Change Is Slower And/Or Smaller Than Expected.
2.No Difference Recognized Between Manifold
Absolute Pressure (MAP) Reading And Barometric
(Atmospheric) Pressure Reading (BARO) At Start-Up.
14 Carb Battery was recently disconnected
14 Injected
1. Manifold Absolute Pressure (MAP) Sensor Input
Less Than Minimum Acceptable Voltage
2. Manifold Absolute Pressure (MAP) Sensor Input
More Than Maximum Acceptable Voltage.
15 Injected
No Distance Sensor (VSS) Signal Detected During
Road Load Conditions
17 Carb
Electronic throttle control solenoid circuit (Idle Speed
Control)
17 Injected
Coolant Temperature (CTS) Stays Less Than Normal
Operating Temperature During Vehicle Operation
18 Carb
Exhaust Gas Recirculation (EGR) solenoid circuit or
Cannister purge solenoid circuit
21 Carb No distributor pick-up signal (CMP) during crank

2. 21 Injected
1.No Rich Or Lean Signal Is Detected From O2
Sensor (O2S) Input.
2.O2 Sensor (O2S) Input Voltage Maintained At More
Than Normal Operating Range.
22 Carb Oxyegen Sensor (O2S) Lean
22 Injected
1. Coolant Temperature Sensor (CTS) Input Less
Than Minimum Acceptable Voltage
2. Coolant Temperature Sensor (CTS) Input More
Than Maximum Acceptable Voltage.
23 Carb Oxygen Sensor (O2S) Rich
23 Injected
1. Throttle Body Temperature Sensor Input Less Than
Minimum Acceptable Voltage
2.Throttle Body Temperature Sensor Input More Than
Maximum Acceptable Voltage.
24 Carb Vacuum Transducer circuit open or shorted
24 Injected
1.Throttle Position Sensor (TPS) Input Less Than
Minimum Acceptable Voltage
2.Throttle Position Sensor (TPS) Input More Than
Maximum Acceptable Voltage.
25 Carb
Fan/Coolant sensor (CTS) circuit or Charge
temperature switch (IAT) circuit
25 Injected
Open Or Shorted Condition Detected In One Or More
Auto Idle Speed (AIS) Control Circuits.(IAC)
26 Carb Engine coolant sensor (CTS) error
27 Injected
Injector Output Driver Does Not Respond Properly To
SBEC (PCM) Control Signal.
28 Carb Vehicle speed switch (VSS) circuit
31 Carb Engine not cranked since battery was disconnected
31 Injected
Open Or Shorted Condition Is Detected In Purge
Solenoid Circuit
32 Carb Computer failure
32 Injected
Open Or Shorted Condition Is Detected In Exhaust
Gas Recirculation (EGR) Solenoid Circuit
33 Carb Computer failure (PCM)
33 Injected
Open Or Shorted Condition Detected In A/C Clutch
Relay Circuit
34 Injected Open Or Shorted Condition Detected In Speed

3. Control (S/C) Vacuum Or Vent Solenoid Circuits
35 Injected
Open Or Shorted Condition Detected In Radiator Fan
Relay Circuit
37 Injected
Computer Open Or Shorted Condition Detected In
Torque Converter Lock-Up (TCC) Solenoid
Circuitfailure
41 Injected Alternator Field Not Switching Properly
42 Injected
1.Open Or Shorted Condition Detected In Auto
Shutdown (ASD) Relay Circuit.
2.No Auto Shutdown (ASD) Relay Voltage Sensed
When ASD Relay Is Energized.
43 Injected
Ignition coil circuits 1, 2, or 3.
Peak Primary Circuit Current Not Achieved With
Maximum Dwell Time
44 Injected
Open Or Shorted Condition Exists In Coolant
Temperature Sensor (CTS) Circuit Or In SBEC Battery
Temperature Voltage
Circuit
45 Injected Open Or Short Detected In Overdrive Solenoid Circuit.
46 Injected Charging System Voltage Too High
47 Injected Charging System Voltage Too Low
51 Injected
1. Heated Oxygen Sensor (HO2S) Input Indicates
Lean Air/Fuel Ratio During Engine Operation
2. Adaptive Memory At Rich Limit
52 Injected
1. Heated Oxygen Sensor (HO2S) Input Indicates
Rich Air/Fuel Ratio During Engine Operation
2. Adaptive Memory At Lean Limit
53 Injected Internal Failure In Engine Controller (PCM)
54 Injected
No Fuel Sync Signal (CMP) Detected During Engine
Rotation
55 Carb End of Fault Code Display
55 Injected
Completion Of Fault Code Display By CHECK
ENGINE Light.
62 Injected
Unsuccessful Attempt To Update EMR Mileage In
SBEC
63 Injected
Unsuccessful Attempt To Write To An EEPROM
Location By SBEC.