Freightliner OBD/OBD2 Codes

Freightliner has built Sprinter vans under an agreement with Mercedes since 2003.  These OBD2 codes apply only to Freightliner Sprinter van models below.

OBD2 Code Lists (Light Duty Vans)

ModelYearEngine identificationSystem
Sprinter 2.7L CDI2003-06VIN position 7 & 8 =41Bosch EDC 15C
Sprinter 3.0L TD2007VIN position 7 & 8 =45
Sprinter 3.5L2007VIN position 7 & 8 =46

OBD1 Codes

Freightliner and Detroit Diesel are both owned by Daimler which is why most Freightliners have Detroit Diesel engines with OBD codes as below.

Fault Codes for Freightliner HD Trucks with Detroit Series 60 Engines with DTEC II

To Read Codes: Use diagnostic data reader or short pin A to pin M. The latter method will flash codes at the CEL.

Codes are two digits and consist of two sets of flashes separated by a long pause.

DTEC II Error CodeDescription
11Power Take-off Sensor Lo Volt
12Power Take-off Sensor Hi Volt
13Coolant Sensor Lo Volt
14Eng Temp Sensor Hi Volt
15Eng Temp Sensor Lo Volt
16Coolant Sensor Hi Volt
21Throttle Pos Sensor Hi Volt
22Throttle Pos Sensor Lo Volt
23Fuel Temp Sensor Hi Volt
24Fuel Temp Sensor Lo Volt
25No Codes
26Power Control Enabled
31Fault on Auxiliary Output
32ECM Backup System Fail
33Turbo Bst Sensor Hi Volt
34Turbo Bst Sensor Lo Volt
35Oil Prs Sensor Hi Volt
36Oil Prs Sensor Lo Volt
37Fuel Prs Sensor Hi Volt
38Fuel Prs Sensor Lo Volt
41Timing Reference Sensor
42Synchronous Ref Sensor
43Low Coolant Level
44Engine Over Temperature
45Low Oil Pressure
46Low Battery Voltage
47Hi Fuel Pressure
48Lo Fuel Pressure
51EEPROM Error
52ECM – A/D Fail
53EEPROM Memory Failure
54Vehicle Speed Sensor
55Proprietary Comm. Link
56ECM – A/D Fail
58Cruise Ctl/Press Gov Ctl Switch
61-68Inj Response Time Long
71-78Inj Response Time Short
84Crankcase Pressure Hi
85Engine Overspeed
86Press Gov Ctl – Hi Volt
87Press Gov Ctl – Lo Volt

Flash Codes for Detroit Series 60 with DTEC III / IV electronic control systems.

  • To read codes, use the diagnostic data reader or depress and hold the diagnostic
    request switch with the ignition on, engine at idle or not running. Press and hold the switch.
    Active codes will be flashed on the “Stop Engine” light (SEL) followed by the inactive codes
    being flashed on the “Check Engine” Light (CEL). The cycle will repeat until the operator
    releases the diagnostic request switch.
  • Please note: Codes 43, 44, and 45 are critical codes and if they are shown, the Stop Engine Light will come on which causes the engine protections to engage and your engine may shut down.
  • All other codes will cause the Check Engine Light to come on which will not engage the engine protections and will allow the engine to continue running.
DTEC III / IV Flash CodeDescription
11VSG Sensor Input Voltage Low
12VSG Sensor Input Voltage High
13Coolant level Sensor (CLS) Voltage Low
14Oil or Coolant Temperature Sensor (OTS or CTS) Voltage High
15Oil or Coolant Temperature Sensor (OTS or CTS) Voltage Low
16Coolant Level Sensor (CLS) Voltage High
17Bypass or Throttle, Valve Position Sensor Input Voltage High
18Bypass or Throttle, Valve Position Sensor Input Voltage Low
21Throttle Position Sensor (TPS) Voltage High
22Throttle Position Sensor (TPS) Voltage Low
23Fuel Temperature Sensor (FTS) Voltage High
24Fuel Temperature Sensor (FTS) Voltage Low
25No Codes
26Auxiliary Engine Shutdown #1 or #2 Input Active
27Air Inlet or Intake Air, Temperature Sensor Input Volage High
28Air Inlet or Intake Air, Temperature Sensor Input Volage Low
31Engine Brake Output Open Circuit or Short to Ground
32CEL or SEL Short to Battery or Open Circuit
33Turbo Boost Sensor (TBS) Voltage High
34Turbo Boost Sensor (TBS) Voltage Low
35Oil Pressure Sensor (OPS) Voltage High
36Oil Pressure Sensor (OPS) Voltage Low
37Fuel Pressure Sensor (FPS) Voltage High
38Fuel Pressure Sensor (FPS) Voltage Low
41Timing Reference Sensor (TRS)
42Synchronous Reference Sensor (SRS)
43Low Coolant
44Oil or Coolant High Temperature
45Low Oil Pressure
46Low Battery Voltage
47Fuel, Air Inlet, or Turbo Boost Pressure High
48Fuel or Air Inlet Pressure Low
51EEPROM Error
52ECM – Analog to Digital Failure
53EEPROM Non-Volatile Memory Failure
54Vehicle Speed Sensor Fault
55J1939 Data Link Failure
56J1587 Data Link Failure
57J1922 Data Link Failure
61Injector Response Time Too Long
62Auxiliary Output Short ot Battery or Open Circuit or Mech Fault
63PWM Drive Short to Battery or Open Circuit
64Turbo Speed Sensor Input Fault
65Throttle Valve Position Input Fault
66Engine Knock Sensor Input Fault
67Coolant or Air Inlet Pressure Sensor Input Voltage High
68Idle Validation Switch Open Circuit or Short to Ground
71Injector Response Time Too Short
72Vehicle Overspeed
73Gas Valve Position Input Fault or ESS Fault
74Optimized Idle Safety Look Short to Ground
75ECM Battery Voltage High
76Engine Overspeed with Engine Brake
77Fuel Temperature High
81Dual Fuel BOI or Exhaust Temperature Voltage High
82Dual Fuel BOI or Exhaust Temperature Voltage Low
83Exhaust Temperature or External Pump Pressure High
85Engine Overspeed
86External Pump Pressure Sensor Input Voltage High
87External Pump Pressure Sensor Input Voltage Low

Fault Codes for DD 15

DD15 engines have three different modules with different fault codes.

  1. ACM (Aftertreatment Control Module) – the ACM looks just like the MCM and will be located near the emission control equipment on the frame rail or a mounting bracket. The ACM can be difficult to find and may even be located inside the frame rail in a hard to access location (size: 11.5″ wide x 8″ deep by 2″ tall)
  2. CPC (Common Powertrain Controller) – a VHS tape size black plastic box (size: 7″ wide x 4.5″ deep by 1.5″ tall) will be somewhere inside the cab and is often located under the dash or under the passenger seat (but this can vary from truck to truck).
  3. MCM (Motor Control Module) – will be bolted onto the side of the engine (size: 11.5″ wide x 8″ deep by 2″ tall).
DD15 GHG14 ACM2.1 Fault Codes
DD15 GHG14 CPC4 Fault Codes
DD15 GHG14 MCM2.1 Fault Codes
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