My check engine light came on this morning so when I got to work I turned the key 3 times to check the fault codes.
It flashed 10 times, Anyone know what that would be?

Thanks in advance

Probably flashed a 5-5, which is "End of Test".

Fault codes are usually 2-digits. If you run the test again, you will notice there is a longer pause inbetween the 5th and 6th flash.

If there are multiple error codes, there will be an even longer pause inbetween the 2-digit flash codes. "5-5" is always the last code.

So if ""5-5" is the only flashing you saw, then there are no error codes in your system.

If you try google, you will find a more thorough answer, and even a listing of fault codes. Just make sure they are correct for your model year.

Sample Info

Another possibility is that you saw a error code like "3-7" or "4-6", and then "5-5". (All have ten flashes.) You need to re-run the test and note exactly where the "pause" is that separates the two digits.

I got it to pop up on the odometer, code is PO191

Sorry, I assumed a Mopar coupe or sedan.
What vehicle?

After doing some searching I was able to find this....

P000F-FUEL SYSTEM OVER PRESSURE RELIEF VALVE ACTIVATED
P0016-CRANKSHAFT/CAMSHAFT TIMING MISALIGNMENT - BANK 1 SENSOR 1
P0031-O2 SENSOR 1/1 HEATER CIRCUIT LOW
P0037-O2 SENSOR 1/2 HEATER CIRCUIT LOW
P003A-TURBOCHARGER BOOST CONTROL MODULE POSITION EXCEEDED LEARNING LIMIT
P0046-TURBOCHARGER BOOST CONTROL CIRCUIT PERFORMANCE
P0049-TURBOCHARGER TURBINE OVERSPEED
P006E-TURBOCHARGER BOOST CONTROL MODULE SUPPLY VOLTAGE CIRCUIT LOW
P006F-TURBOCHARGER BOOST CONTROL SUPPLY VOLTAGE CIRCUIT HIGH
P0071-INLET AIR TEMP SENSOR RATIONALITY
P0072-INLET AIR TEMP SENSOR VOLTAGE TOO LOW
P0073-INLET AIR TEMP SENSOR VOLTAGE TOO HIGH
P007C-CHARGE AIR COOLER TEMPERATURE SENSOR CIRCUIT LOW
P007D-CHARGE AIR COOLER TEMPERATURE SENSOR CIRCUIT HIGH
P007E-CHARGE AIR COOLER TEMPERATURE SENSOR CIRCUIT INTERMITTENT/ERRATIC
P0087-FUEL RAIL PRESSURE TOO LOW
P0088-FUEL RAIL PRESSURE TOO HIGH
P00AF-TURBOCHARGER BOOST CONTROL MODULE PERFORMANCE
P0101-MASS AIR FLOW SENSOR "A" CIRCUIT PERFORMANCE
P0102-MASS AIR FLOW SENSOR "A" CIRCUIT LOW
P0103-MASS AIR FLOW SENSOR "A" CIRCUIT HIGH
P0106-MANIFOLD ABSOLUTE PRESSURE SENSOR PERFORMANCE
P0107-MANIFOLD ABSOLUTE PRESSURE SENSOR CIRCUIT LOW
P0108-MANIFOLD ABSOLUTE PRESSURE SENSOR CIRCUIT HIGH
P0111-INTAKE AIR TEMPERATURE SENSOR 1 PERFORMANCE
P0112-INTAKE AIR TEMPERATURE SENSOR 1 CIRCUIT LOW
P0113-INTAKE AIR TEMPERATURE SENSOR 1 CIRCUIT HIGH
P0116-ENGINE COOLANT TEMPERATURE SENSOR PERFORMANCE
P0117-ENGINE COOLANT TEMPERATURE SENSOR CIRCUIT LOW
P0118-ENGINE COOLANT TEMPERATURE SENSOR CIRCUIT HIGH
P0128-THERMOSTAT RATIONALITY
P0131-O2 SENSOR 1/1 CIRCUIT LOW
P0135-O2 SENSOR 1/1 HEATER PERFORMANCE
P0137-O2 SENSOR 1/2 CIRCUIT LOW
P0141-O2 SENSOR 1/2 HEATER PERFORMANCE
P0148-FUEL DELIVERY ERROR
P0169-WATER IN FUEL DETECTED FOR TOO LONG
P0191-FUEL RAIL PRESSURE SENSOR CIRCUIT PERFORMANCE
P0192-FUEL PRESSURE SENSOR LOW
P0193-FUEL PRESSURE SENSOR HIGH
P0201-FUEL INJECTOR 1 CIRCUIT/OPEN
P0202-FUEL INJECTOR 2 CIRCUIT/OPEN
P0203-FUEL INJECTOR 3 CIRCUIT/OPEN
P0204-FUEL INJECTOR 4 CIRCUIT/OPEN
P0205-FUEL INJECTOR 5 CIRCUIT/OPEN
P0206-FUEL INJECTOR 6 CIRCUIT/OPEN
P0217-COOLANT TEMPERATURE TOO HIGH
P0219-ENGINE OVERSPEED
P0251-INJECTION PUMP FUEL VALVE FEEDBACK
P0300-MULTIPLE CYLINDER MISFIRE
P0301-CYLINDER 1 MISFIRE
P0302-CYLINDER 2 MISFIRE
P0303-CYLINDER 3 MISFIRE
P0304-CYLINDER 4 MISFIRE
P0305-CYLINDER 5 MISFIRE
P0306-CYLINDER 6 MISFIRE
P0335-CRANKSHAFT POSITION SENSOR CIRCUIT
P0336-CRANKSHAFT POSITION SENSOR PERFORMANCE
P0340-CAMSHAFT POSITION SENSOR CIRCUIT - BANK 1 SENSOR 1
P0341-CAMSHAFT POSITION SENSOR PERFORMANCE - BANK 1 SENSOR 1
P0381-WAIT TO START LAMP INOPERATIVE
P0400-EGR SYSTEM FLOW MALFUNCTION
P0401-EGR SYSTEM PERFORMANCE
P0402-EGR FLOW EXCESSIVE DETECTED
P0403-EGR CONTROL CIRCUIT/OPEN
P0404-EGR POSITION SENSOR PERFORMANCE
P0405-EGR POSITION SENSOR CIRCUIT LOW
P040B-EXHAUST GAS RECIRCULATION TEMPERATURE SENSOR 1 CIRCUIT PERFORMANCE
P040C-EXHAUST GAS RECIRCULATION TEMPERATURE SENSOR 1 CIRCUIT LOW
P040D-EXHAUST GAS RECIRCULATION TEMPERATURE SENSOR 1 CIRCUIT HIGH
P0420-CATALYST EFFICIENCY BANK 1
P042E-EXHAUST GAS RECIRCULATION CONTROL STUCK OPEN
P0461-FUEL LEVEL SENSOR 1 PERFORMANCE
P0462-FUEL LEVEL SENSOR 1 CIRCUIT LOW
P0463-FUEL LEVEL SENSOR 1 CIRCUIT HIGH
P0471-EXHAUST PRESSURE SENSOR 1 PERFORMANCE
P0472- EXHAUST PRESSURE SENSOR 1 LOW
P0473- EXHAUST PRESSURE SENSOR 1 HIGH
P0480-COOLING FAN 1 CONTROL CIRCUIT/OPEN
P0483-COOLING FAN SPEED
P0487-EGR AIRFLOW THROTTLE CONTROL CIRCUIT A OPEN
P0488-EGR AIRFLOW THROTTLE CONTROL CIRCUIT PERFORMANCE
P0489-EGR CONTROL CIRCUIT LOW
P0501-VEHICLE SPEED SENSOR 1 PERFORMANCE
P0505-ENGINE SPEED AT IDLE - DATA ERRATIC, INTERMITTENT OR INCORRECT
P0513-INVALID SKIM KEY
P0514-BATTERY TEMPERATURE SENSOR PERFORMANCE
P0516-BATTERY TEMPERATURE SENSOR CIRCUIT LOW
P0517-BATTERY TEMPERATURE SENSOR CIRCUIT HIGH
P051B-CRANKCASE PRESSURE SENSOR CIRCUIT RANGE/PERFORMANCE
P051C-CRANKCASE PRESSURE SENSOR CIRCUIT LOW
P051D-CRANKCASE PRESSURE SENSOR CIRCUIT HIGH
P0521-ENGINE OIL PRESSURE SENSOR PERFORMANCE
P0524-ENGINE OIL PRESSURE TOO LOW
P0532-A/C PRESSURE SENSOR CIRCUIT LOW
P0533-A/C PRESSURE SENSOR CIRCUIT HIGH
P0541-INTAKE AIR HEATER CONTROL CIRCUIT 1 LOW
P0542-INTAKE AIR HEATER CONTROL CIRCUIT 1 HIGH
P0545-EXHAUST GAS TEMPERATURE SENSOR CIRCUIT LOW - BANK 1 SENSOR 1
P0546-EXHAUST GAS TEMPERATURE SENSOR CIRCUIT HIGH - BANK 1 SENSOR 1
P0562-BATTERY VOLTAGE LOW
P0563-BATTERY VOLTAGE HIGH
P0571-BRAKE SWITCH 1 PERFORMANCE
P0572-BRAKE SWITCH 1 STUCK ON
P0573-BRAKE SWITCH 1 STUCK OFF
P0580-SPEED CONTROL SWITCH 1 CIRCUIT LOW
P0581-SPEED CONTROL SWITCH 1 CIRCUIT HIGH
P0585-SPEED CONTROL SWITCH 1/2 CORRELATION
P0592-SPEED CONTROL SWITCH 2 CIRCUIT LOW
P0593-SPEED CONTROL SWITCH 2 CIRCUIT HIGH
P0601-INTERNAL MEMORY CHECKSUM INVALID
P0604-INTERNAL CONTROL MODULE RAM
P0606-INTERNAL CONTROL PROCESSOR
P0607-ECU INTERNAL PERFORMANCE
P061A-ETC LEVEL 2 TORQUE PERFORMANCE
P061C-ETC LEVEL 2 RPM PERFORMANCE
P0622-GENERATOR FIELD CONTROL CIRCUIT/OPEN
P0628-FUEL PUMP CONTROL CIRCUIT LOW
P0629-FUEL PUMP CONTROL CIRCUIT HIGH
P062C-ETC LEVEL 2 MPH PERFORMANCE
P0630-VIN NOT PROGRAMMED IN PCM
P0633-SKIM SECRET KEY NOT STORED IN PCM
P063C-GENERATOR VOLTAGE SENSE LOW
P063D-GENERATOR VOLTAGE SENSE HIGH
P0642-SENSOR REFERENCE VOLTAGE 1 CIRCUIT LOW
P0643-SENSOR REFERENCE VOLTAGE 1 CIRCUIT HIGH
P0646-A/C CONTROL CIRCUIT LOW
P0647-A/C CONTROL CIRCUIT HIGH
P0652-SENSOR REFERENCE VOLTAGE 2 LOW
P0653-SENSOR REFERENCE VOLTAGE 2 HIGH
P065A-GENERATOR SYSTEM PERFORMANCE
P0698-SENSOR REFERENCE VOLTAGE 3 CIRCUIT LOW
P0699-SENSOR REFERENCE VOLTAGE 3 CIRCUIT HIGH
P06A4-SENSOR REFERENCE VOLTAGE 4 CIRCUIT LOW
P06A5-SENSOR REFERENCE VOLTAGE 4 CIRCUIT HIGH
P0700-TRANSMISSION CONTROL SYSTEM (MIL REQUEST)
P0850-PARK/NEUTRAL SWITCH PERFORMANCE
P1011-FUEL PUMP DELIVERY PRESSURE TOO LOW
P1012 - FUEL PUMP DELIVERY PRESSURE TOO HIGH
P113C-O2 SENSOR POWER SUPPLY CIRCUIT PERFORMANCE
P1191 - INLET AIR TEMPERATURE SENSOR RATIONAL/PERFORMANCE
P1192-INLET AIR TEMPERATURE SENSOR LOW
P1193-INLET AIR TEMPERATURE SENSOR HIGH
P125A-POWER ENABLE CONTROL CIRCUIT LOW
P125B-POWER ENABLE CONTROL CIRCUIT HIGH
P141A-EXHAUST GAS TEMPERATURE SENSOR 1 AND 2 SIGNALS SWAPPED
P144E-EGR COOLER BYPASS STATUS LINE CIRCUIT LOW
P144F-EGR COOLER BYPASS STATUS LINE CIRCUIT HIGH
P1451-DIESEL PARTICULATE FILTER SYSTEM PERFORMANCE
P1484-CATALYST OVERHEAT DETECTION
P1506-CRANKCASE DEPRESSION REGULATOR VALVE PERFORMANCE
P1507-CRANKCASE FILTER RESTRICTION
P1508-CRANKCASE FILTER RESTRICTION - REPLACE FILTER
P2000-NOX ABSORBER EFFICIENCY BELOW THRESHOLD - BANK 1
P2002-DIESEL PARTICULATE FILTER EFFICIENCY BELOW THRESHOLD
P200C-DIESEL PARTICULATE FILTER OVER TEMPERATURE - BANK 1
P200E-CATALYST SYSTEM OVER TEMPERATURE - BANK 1
P2032-EXHAUST GAS TEMPERATURE SENSOR CIRCUIT LOW- BANK 1 SENSOR 2
P2033-EXHAUST GAS TEMPERATURE SENSOR CIRCUIT HIGH - BANK 1 SENSOR 2
P2080-EXHAUST GAS TEMP SENSOR CIRCUIT PERFORMANCE - BANK 1 SENSOR 1
P2084-EXHAUST GAS TEMP SENSOR CIRCUIT PERFORMANCE - BANK 1 SENSOR 2
P2121-ACCELERATOR PEDAL POSITION SENSOR 1 PERFORMANCE
P2122-ACCELERATOR PEDAL POSITION SENSOR 1 CIRCUIT LOW
P2123-ACCELERATOR PEDAL POSITION SENSOR 1 CIRCUIT HIGH
P2127-ACCELERATOR PEDAL POSITION SENSOR 2 CIRCUIT LOW
P2128-ACCELERATOR PEDAL POSITION SENSOR 2 CIRCUIT HIGH
P2141-EGR AIRFLOW THROTTLE CONTROL CIRCUIT LOW
P2142-EGR AIRFLOW THROTTLE CONTROL CIRCUIT HIGH
P2227-BAROMETERIC PRESSURE SENSOR RATIONALITY
P2228-BAROMETRIC PRESSURE CIRCUIT LOW
P2229-BAROMETRIC PRESSURE CIRCUIT HIGH
P2262-TURBOCHARGER BOOST PRESSURE NOT DETECTED - MECHANICAL
P2266-WATER IN FUEL SENSOR CIRCUIT LOW
P2267-WATER IN FUEL SENSOR CIRCUIT HIGH
P2269-WATER IN FUEL CONDITION
P2299-BRAKE PEDAL POSITION / ACCELERATOR PEDAL POSITION INCOMPATIBLE
P242B-EXHAUST GAS TEMP SENSOR CIRCUIT PERFORMANCE - BANK 1 SENSOR 3 - DIESEL
P242C-EXHAUST GAS TEMPERATURE SENSOR CIRCUIT LOW- BANK 1 SENSOR 3
P242D-EXHAUST GAS TEMPERATURE SENSOR CIRCUIT HIGH - BANK 1 SENSOR 3
P242F-DIESEL PARTICULATE FILTER RESTRICTION - ASH ACCUMULATION
P244A-DIESEL PARTICULLATE FILTER DIFFERENTIAL PRESSURE TOO LOW
P244D-EXHAUST TEMPERATURE TOO HIGH FOR PARTICULATE FILTER REGENERATION-BANK 1
P2453-DIESEL PARTICULATE FILTER PRESSURE SENSOR A CIRCUIT PERFORMANCE
P2454-DIESEL PARTICULATE FILTER PRESSURE SENSOR A CIRCUIT LOW
P2455-DIESEL PARTICULATE FILTER PRESSURE SENSOR A CIRCUIT HIGH
P2457-EXHAUST GAS RECIRCULATION COOLING SYSTEM PERFORMANCE
P245A-EGR COOLER BYPASS CONTROL CIRCUIT /OPEN
P245C-EGR COOLER BYPASS CONTROL CIRCUIT LOW
P245D-EGR COOLER BYPASS CONTROL CIRCUIT HIGH
P2463-DIESEL PARTICULATE FILTER - SOOT ACCUMULATION
P2503-CHARGING SYSTEM OUTPUT LOW
P2504-CHARGING SYSTEM OUTPUT HIGH
P2509-ECM/PCM POWER INPUT SIGNAL INTERMITTENT
P254C-PTO SPEED SELECTOR SENSOR CIRCUIT LOW
P254D-PTO SPEED SELECTOR SENSOR CIRCUIT HIGH
P2579-TURBOCHARGER SPEED SENSOR CIRCUIT PERFORMANCE
P2580-TURBOCHARGER SPEED SENSOR CIRCUIT LOW
P2609-INTAKE AIR HEATER SYSTEM PERFORMANCE
P268C-CYLINDER 1 INJECTOR DATA INCOMPATIBLE
P268D-CYLINDER 2 INJECTOR DATA INCOMPATIBLE
P268E-CYLINDER 3 INJECTOR DATA INCOMPATIBLE
P268F-CYLINDER 4 INJECTOR DATA INCOMPATIBLE
P2690-CYLINDER 5 INJECTOR DATA INCOMPATIBLE
P2691-CYLINDER 6 INJECTOR DATA INCOMPATIBLE
P2A00-O2 SENSOR 1/1 CIRCUIT PERFORMANCE
P2A01-O2 SENSOR 1/2 CIRCUIT PERFORMANCE
U0001-CAN C BUS
U0101-LOST COMMUNICATION WITH TCM
U010C-LOST COMMUNICATION WITH TURBOCHARGER/SUPERCHARGER CONTROL MODULE
U011A-LOST COMMUNICATION WITH EXHAUST GAS SENSOR MODULE
U0141-LOST COMMUNICATION WITH FCM (TIPM)
U1403-IMPLAUSIBLE FUEL LEVEL SIGNAL RECEIVED
U1412-IMPLAUSIBLE VEHICLE SPEED SIGNAL RECEIVED
U1421-IMPLAUSIBLE IGNITION KEY OFF TIME RECEIVED






What I have noticed tho in my truck is that it is knocking more then other 2006 diesel Rams that I have been around. My neighbor even told me it sounded bad