# Service bulletin S20

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10138971
- Published by NHTSA: 2018\-06\-04
- Manufacturer's number: S20
- Manufacturer's date: 2016\-04\-01
- NHTSA component: EQUIPMENT; ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)

## NHTSA's summary

Customer Satisfaction Notification S20 Reprogram Powertrain Control Module The Powertrain Control Module \(PCM\) software on about 81,000 of the above vehicles may have backup lamp illumination timing that does not meet customer expectations. The PCM must be reprogrammed with new software.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2016/MC-10138971-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2016/MC-10138971-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system, Equipment and accessories, Transmission and driveline, Automatic transmission, Transmission control module

## Vehicles listed

- 2012 FIAT 500
- 2013 to 2015 FIAT 500E

## Recalls for the same vehicles and component

- [19V817000](/recalls/nhtsa/19V817000.md), 2019-11-15: POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:FLOOR SHIFT; POWER TRAIN:AUTOMATIC TRANSMISSION
- [15V291000](/recalls/nhtsa/15V291000.md), 2015-05-18: POWER TRAIN:AUTOMATIC TRANSMISSION

## Other bulletins for the same vehicles and component

- [1806914](/bulletins/10232006.md), 2023-02-21, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM; POWER TRAIN. Powertrain Control Module \(PCM\)
- [18\-027\-15 REV. B](/bulletins/10216166.md), 2022-07-25, Service bulletin: ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY; POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Flash: 1.4L Diagnostic And System Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module \(PCM\) with new software. Customers may experience one of the following: ? Intermittent fast crank condition ? Cranks as if no compression ? Malfunction Indicator Lamp \(MIL\) illumination ? Intermittent crank \- no start condition The technician may find one or more of the following Diagnostic Trouble Codes \(DTCs\) are set in the Powertrain Control Module \(PCM\) memory: ? P1128\-00 \- Closed Loop Fueling Not Achieved \- Bank 1 Upstream ? P1524\-00 \- Oil Pressure Out Of Range \- Camshaft Advance/Retard Disabled \(Sales code EAF only\) ? P1607\-00 \- PCM Internal Shutdown Timer Rationality \(Sales code EAB only\) ? P2610\-00 \- PCM Internal Engine Off Timer Performance \(Sales code EAB only\) ? P1239\-00 \- Engine Oil Temperature Too Low \(Sales code EAB only\) ? P0298\-00 \- Engine Oil Temperature Too High \(Sales code EAB only\) ? P2299\-00 \- Brake Pedal Position/ Accelerator Pedal Position Incompatible ? P0456\-00 \- Evap System Small Leak ? P0456\-00 \- Evap System Small Leak
- [18\-010\-15 REV. D](/bulletins/10216157.md), 2022-07-25, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM; EQUIPMENT; POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Flash: 1.4L Diagnostic And System Improvements This bulletin involves reprogramming the Powertrain Control Module \(PCM\) with the latest software. The customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes \(DTCs\): ? Cranks fast, as if no compression. ? P1524 \- Oil Pressure Out Of Range \- Camshaft Advance/Retard Disabled \(2014 Vehicles only\). ? P1128 \- Closed Loop Fueling Not Achieved \- Bank 1 Upstream \(2014 Vehicles only\). ? P0141 \- Oxygen Sensor 1/2 Heater Performance \(2015 Vehicles only\). ? P1046 \- Cylinder 1 Oil Supply Solenoid Valve Overcurrent. ? P1048 \- Cylinder 2 Oil Supply Solenoid Valve Overcurrent. ? P104A \- Cylinder 3 Oil Supply Solenoid Valve Overcurrent. ? P104C \- Cylinder 4 Oil Supply Solenoid Valve Overcurrent. ? P061A Internal Control Module Torque Performance \(2014 Vehicles only\). ? Improved reverse lamp activation time \(2015 auto trans only\). ? Improved cold weather starting, below \-4 °F \(\-20 °C\).
- [18\-027\-15 REV\-B](/bulletins/10151747.md), 2018-12-17, Service bulletin: ENGINE; SERVICE BRAKES, HYDRAULIC; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Flash: 1.4L Diagnostic And System Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module \(PCM\) with new software. Customers may experience one of the following: ? Intermittent fast crank condition ? Cranks as if no compression ? Malfunction Indicator Lamp \(MIL\) illumination ? Intermittent crank \- no start condition The technician may find one or more of the following Diagnostic Trouble Codes \(DTCs\) are set in the Powertrain Control Module \(PCM\) memory: ? P1128\-00 \- Closed Loop Fueling Not Achieved \- Bank 1 Upstream ? P1524\-00 \- Oil Pressure Out Of Range \- Camshaft Advance/Retard Disabled \(Sales code EAF only\) ? P1607\-00 \- PCM Internal Shutdown Timer Rationality \(Sales code EAB only\) ? P2610\-00 \- PCM Internal Engine Off Timer Performance \(Sales code EAB only\) ? P1239\-00 \- Engine Oil Temperature Too Low \(Sales code EAB only\) ? P0298\-00 \- Engine Oil Temperature Too High \(Sales code EAB only\) ? P2299\-00 \- Brake Pedal Position/ Accelerator Pedal Position Incompatible ? P0456\-00 \- Evap System Small Leak ? P0456\-00 \- Evap System Small Leak
- [18\-010\-15 REVB](/bulletins/10149702.md), 2018-12-03, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Flash:1.4L Diagnostic And System Improvements This bulletin involves reprogramming the Powertrain Control Module \(PCM\) with the latest software. The customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find Diagnostic Trouble Codes \(DTCs\): ? P1046 \- Cylinder 1 Oil Supply Solenoid Valve Overcurrent. ? P1048 \- Cylinder 2 Oil Supply Solenoid Valve Overcurrent. ? P104A \- Cylinder 3 Oil Supply Solenoid Valve Overcurrent. ? P104C \- Cylinder 4 Oil Supply Solenoid Valve Overcurrent. ? P0141 Oxygen Sensor 1/2 Heater Performance. ? P061A Internal Control Module Torque Performance \(2014 Vehicles only\). ? Improved reverse lamp activation time \(2015 auto trans only\). ? Improved cold weather starting, below \-4 °F \(\-20 °C\).
- [18\-032\-15 REV\-C](/bulletins/10148992.md), 2018-11-26, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM:STARTER ASSEMBLY:SOLENOID; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM. Flash: 1.4L Diagnostic And System Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module \(PCM\) with new software. A small number of customers may experience one of the following conditions or a a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the Technician may find a Diagnostic Trouble Code has been set in the PCM. ? P0141 \- O2 Sensor 1/2 Heater Performance. ? Crank no start condition in extreme cold temperatures of \-4°F \(\-20°C\) partially due to the available fuel blend conditions. Additional Software Improvements Include: ? P1046 \- Cylinder 1 Oil Supply Solenoid Valve Overcurrent. ? P1048 \- Cylinder 2 Oil Supply Solenoid Valve Overcurrent. ? P104A \- Cylinder 3 Oil Supply Solenoid Valve Overcurrent. ? P104C \- Cylinder 4 Oil Supply Solenoid Valve Overcurrent.
- [18\-010\-15 REV\-C](/bulletins/10148991.md), 2018-11-26, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:STARTER ASSEMBLY:SOLENOID; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Flash:1.4L Diagnostic And System Improvements This bulletin involves reprogramming the Powertrain Control Module \(PCM\) with the latest software. The customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes \(DTCs\): ? P0141 Oxygen Sensor 1/2 Heater Performance \(software has been updated to better address this DTC, for EAB engines\). ? P1046 \- Cylinder 1 Oil Supply Solenoid Valve Overcurrent. ? P1048 \- Cylinder 2 Oil Supply Solenoid Valve Overcurrent. ? P104A \- Cylinder 3 Oil Supply Solenoid Valve Overcurrent. ? P104C \- Cylinder 4 Oil Supply Solenoid Valve Overcurrent. ? P061A Internal Control Module Torque Performance \(2014 Vehicles only\). ? Improved reverse lamp activation time \(2015 auto trans only\). ? Improved cold weather starting, below \-4 °F \(\-20 °C\).
- [21\-036\-15](/bulletins/10148939.md), 2018-11-26, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Flash: Transmission Shift And Drivability Enhancements This bulletin involves reprogramming the Transmission Control Module \(TCM\) with the latest available software. A small number of customers may experience or notice harsh shifts.
- [18\-010\-15](/bulletins/10148594.md), 2018-11-19, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM. Flash:1.4L Diagnostic And System Improvements This bulletin involves reprogramming the Powertrain Control Module \(PCM\) with the latest software. The customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find Diagnostic Trouble Codes \(DTCs\): ? P0141 Oxygen Sensor 1/2 Heater Performance. ? P061A Internal Control Module Torque Performance \(2014 Vehicles only\). ? Improved reverse lamp activation time \(2015 auto trans only\).
- [18\-007\-14 REV. B](/bulletins/10139792.md), 2018-06-11, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ENGINE AND ENGINE COOLING. Flash:1.4L Diagnostic And System Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module \(PCM\) with new software. A small number of customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon inspection, the technician may find one or more of the following Diagnostic Trouble Codes \(DTCs\) are set in the Powertrain Control Module \(PCM\) memory. ? P1607\-00 \- PCM Internal Shutdown Timer Rationality. \(Sales code EAB only\) ? P2610\-00 \- PCM Internal Engine Off Timer Performance. \(Sales code EAB only\) ? P1239\-00 \- Engine Oil Temperature Too Low. \(Sales code EAB only\) ? P0298\-00 \- Engine Oil Temperature Too High. \(Sales code EAB only\) ? P2299\-00 \- Brake Pedal Position/ Accelerator Pedal Position Incompatible. ? P0456\-00 \- Evap System Small Leak ? P0456\-00 \- Evap System Small Leak In addition, the customer may also experience an intermittent crank, no start condition. The customer may indicate the engine sounds like it is freewheeling or has no compression. When this issue occurs, it is typically resolved with a simple ignition key cycle. This may happen in colder temperatures.

JSON: [/v1/bulletins/10138971](/v1/bulletins/10138971)

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