# Service bulletin 08\-033\-20

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: 10175136
- Published by NHTSA: 2020\-05\-18
- Manufacturer's number: 08\-033\-20
- Manufacturer's date: 2020\-03\-07
- NHTSA component: POWER TRAIN:AUTOMATIC TRANSMISSION:PARK/NEUTRAL START INTERLOCK SWITCH

## NHTSA's summary

Intermittent No Crank No Start This bulletin involves inspecting the ground wire to engine block fastener and replacingif necessary. The customer may comment on the following:A no start and/or intermittent no start condition.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10175136-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10175136-9999.pdf)

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

## Components

Transmission and driveline, Automatic transmission

## Vehicles listed

- 2020 RAM 1500

## Other bulletins for the same vehicles and component

- [S1808000152](/bulletins/10234438.md), 2023-04-17, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). CEL \(Check Engine Lamp\) Illuminates, Recent PCM Replace or Flash Update Performed, Diagnostic Trouble Codes \(DTCs\) P057B Brake Pedal Position Sensor Circuit Performance, P1572 Brake Pedal Stuck, C0042\-54 Brake Pedal Missing Calibration
- [1800821](/bulletins/10223493.md), 2022-10-17, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE; FUEL SYSTEM, DIESEL; ELECTRICAL SYSTEM; BACK OVER PREVENTION; SERVICE BRAKES, HYDRAULIC; EXTERIOR LIGHTING; FUEL SYSTEM, GASOLINE. Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find that one or more of the following DTCs have been set: P225D\-00 \- Nox Sensor 1/1 Performance \- Signal Stuck Low. P249C\-00 \- Excessive Time To Enter Closed Loop Reductant Injection Control. P065A \- Generator System Performance. P00F4\-00 \- Humidity Sensor Circuit Low. Improved VGT cleaning to reduce false failures for P00AF field issue. P0106\-00 \- Manifold Absolute Pressure Sensor Performance. P20FB\-00 \- Reductant Pump 2 Control Performance. P200A\-00 \- Intake Manifold Runner Performance \- Bank 1. P200B\-00 \- Intake Manifold Runner Performance \- Bank 2. P2610 \- PCM Internal Engine Off Timer Performance. Change DTC number from P0101\-00 to P0109\-00 \- Mass Air Flow Sensor Performance. P015E \- Excessive Time to Enter Closed Loop Fuel Timing Control. P0534\-00 \- AC Refrigerant System A Charge Loss. P26FB\-00 \- EGR Cooler Bypass Control Stuck Closed Bank 1. P04DB\-00 \- Crankcase Ventilation System Disconnected. P204F\-00 \- Reductant System Performance. P2D2D\-00 \- Cold Start Intake Manifold Runner Performance Bank 1. P2D2E\-00 \- Cold Start Intake Manifold Runner Performance Bank 2. P2199\-00 \- Intake Air Temperature Sensor 1 / 2 Correlation. P22FA\-00 \- NOX Sensor Performance \- Slow Response High To Low Bank 1 Sensor 1. P2002\-00 \- Diesel Particulate Filter Efficiency Below Threshold. P0087\-00 \- Fuel Rail Pressure Too Low. P0128\-00 \- Thermostat Rationality\(additional software enhancement\). P0300\-00 \- Multiple Cylinder Misfire\(cold ambient temperature\). P0301\-00 \- Cylinder 1 Misfire\(cold ambient temperature\). P0302\-00 \- Cylinder 2 Misfire\(cold ambient temperature\). P0303\-00 \- Cylinder 3 Misfire\(cold ambient temperature\). P0304\-00 \- Cylinder 4 Misfire\(cold ambient temperature\). P0305\-00 \- Cylinder 5 Misfire\(cold ambient temperature\).
- [S2018000009](/bulletins/10221827.md), 2022-09-26, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM; EXTERIOR LIGHTING. Malfunction Indicator Lamp \(MIL\) Illuminated. Diagnostic Trouble Codes \(DTCs\) P00AF ? Turbocharger Boost Control Module ?A? Performance and/or P226C ? Turbocharger Boost Control Module ?A? Slow Response.
- [1801120](/bulletins/10221767.md), 2022-09-26, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE; ELECTRICAL SYSTEM. Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience the following: A hesitation or rough feeling during engine\-starting. Extended or longer than usual engine crank time. This conditions usually happens after a cold engine start and the vehicle is turnedoff and turned on within 3\-5 minutes this will result in an extended or longer crank than usual before the vehicle restarts.
- [S2125000002](/bulletins/10221288.md), 2022-09-26, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Customer complaint includes a Mil\-on condition. Upon further investigation, one or more of the following fault codes may be set in the PCM:
- [1802221](/bulletins/10220616.md), 2022-09-26, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find that the one or more of the following DTCs have been set: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. P0307 \- Cylinder 7 Misfire. P0308 \- Cylinder 8 Misfire. The customer may also experience one or more of the following:Rough idle/misfire only after cold start Auto Park system is unable to be manually over\-ridden after an Auto Park event. Auto Park disabled message will not display in cluster. ECO light does not illuminate in the cluster when Multiple Displacement System \(MDS\) is active\(EMEA, LATAM and APAC\). 2\-3 kph \(1.3\-1.9 mph\) difference between cruise set speed and the actual vehicle speed\(EMEA, LATAM and APAC\). Bump sensation during a coast down with light acceleration. Abnormal vibration when accelerating lightly during stop and go driving conditions.
- [S1925000008](/bulletins/10214560.md), 2022-06-27, Service bulletin: ENGINE AND ENGINE COOLING; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM. Malfunction Indicator Lamp \(MIL\) Illumination. Diagnostic Trouble Codes \(DTCs\) P208B ? Reductant Pump 1 Control Performance, and/or P20E8 ? Reductant Pressure Too Low, Set.
- [S2125000002](/bulletins/10212447.md), 2022-05-31, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Customer complaint includes a Mil\-on condition. Upon further investigation, one or more of the following fault codes may be set in the PCM:
- [18\-062\-20 REV. A](/bulletins/10187710.md), 2021-03-01, Service bulletin: ENGINE; ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find that the one or more of the following DTCs have been set: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. P0307 \- Cylinder 7 Misfire. P0308 \- Cylinder 8 Misfire. The customer may experience one or more of the following:Rough idle/misfire only after cold start ECO light does not illuminate in the cluster when Multiple Displacement System \(MDS\) is active\(EMEA, LATAM and APAC\). 2\-3 kph \(1.3\-1.9 mph\) difference between cruise set speed and the actual vehicle speed\(EMEA, LATAM and APAC\).
- [S2008000196](/bulletins/10187655.md), 2021-03-01, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR. Diagnostic Trouble Code \(DTC\) P065A ? Generator System Performance, Additional Information.

JSON: [/v1/bulletins/10175136](/v1/bulletins/10175136)

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