P0341 on 2021-2023 Jeep Wrangler: Camshaft Sensor Wiring and Fixes

What's Unique About the 2021-2023 Jeep WRANGLER

For this specific generation of Jeep Wrangler and its platform mates (Jeep Gladiator and Ram 1500) with the 3.0L EcoDiesel engine, the P0341 code is strongly linked to a known wiring design or routing flaw from the factory. A manufacturer TSB confirms that electromagnetic interference (EMI) from the generator's wiring disrupts the camshaft sensor signal. The official fix requires repairing the harness with a special overlay and rerouting the generator cable, a more complex solution than simply replacing the sensor. Many owners report that replacing the sensor alone does not fix the issue, and the code returns until the TSB is performed.

Diagnostic Flowchart

Tap your situation to follow the diagnostic path that matches what you're seeing on this vehicle.

Symptoms You May Notice

• Check Engine Light (MIL) is on
• Engine is difficult to start or requires extended cranking
• Rough idle or stalling
• Hesitation during acceleration
• Reduced engine power or vehicle entering 'limp mode'
• Decreased fuel economy
• Intermittent CEL that may turn off on its own after a drive cycle.

Most Likely Causes

1. Camshaft Sensor Wiring Harness Interference 🔴 High Probability → Shop Engine Camshaft TSB #08-099-25 explicitly calls out this issue. The cause is electromagnetic interference (EMI) from the generator wiring being mis-routed too close to the camshaft sensor harness. 🎬 Watch: See how this mis-routed wiring harness causes interference issues. This is a factory routing flaw, not damage from external sources.
   How to confirm: Visually inspect the camshaft position sensor wiring harness and the generator wiring. Check for proximity and improper routing as described in TSB #08-099-25. The TSB provides detailed voltage and resistance checks at the sensor connector to verify the fault.
   Typical fix: Perform the repair outlined in TSB #08-099-25. This involves repairing the cam sensor harness by installing a 'twisted pair overlay' (P/N 68726700AA) and rerouting the generator wiring, securing it with new tie straps (P/N 68144210AA) to ensure proper clearance.
   Est. part cost: $20-$60
2. Faulty Camshaft Position Sensor ⚪ Low Probability → Shop Engine Camshaft Position Sensor
   How to confirm: This should only be considered after the wiring harness TSB has been performed or ruled out. If the wiring fix is complete and the code returns, the sensor itself could be faulty. Testing its signal with an oscilloscope is the definitive check.
   Typical fix: Replace the camshaft position sensor for Bank 1. The Mopar OEM part number is 05140332AA.
   Est. part cost: $50-$90

Rare But Worth Checking

• Stretched Timing Chain: → Shop Engine Timing Chain While less common on newer vehicles, a stretched timing chain can throw off the cam/crank correlation and trigger a P0341 code. This is a more serious mechanical issue, often accompanied by rattling noises.
• Faulty Camshaft Phaser: → Shop Engine Camshaft On the 3.6L Pentastar V6, a malfunctioning VVT cam phaser that is not locking correctly can cause camshaft position codes. This is a mechanical failure inside the engine.
• Experimental/Prototype Harness Needed: In very persistent cases where the standard TSB does not resolve the issue, some owners on forums have reported that a dealer, under guidance from Stellantis (Starcase #102598114), installed a 'prototype camshaft position sensor wiring harness' to finally fix the problem. This is an extreme and rare case, indicating the standard fix is not 100% effective for all vehicles.
• Powertrain Control Module (PCM) Issue: In very rare cases, the PCM itself may have a fault in the driver circuit for the camshaft sensor. This should only be considered after all other possibilities have been exhausted.

Diagnosis Steps

1. Confirm the P0341 code is present using an OBD-II scanner.
🎬 Watch: A breakdown of common causes and fixes for P0341.
2. Obtain a copy of TSB #08-099-25, as it contains the primary diagnosis and repair path.
3. Visually inspect the Bank 1 camshaft position sensor and its electrical connector for any obvious damage or loose connections.
4. Carefully inspect the routing of the camshaft sensor harness and the generator wiring harness. Check for areas where they are too close, causing potential EMI as described in the TSB.
5. If wiring appears intact, perform the electrical checks from the TSB with a multimeter. With the key ON, check for 5V supply and ~4.6V on the signal wire to ground.
6. If the diagnosis points to the wiring issue, perform the full repair procedure from TSB #08-099-25, which includes installing the overlay harness (P/N 68726700AA) and rerouting the generator cable.
7. If the TSB has been performed and the code still returns, the sensor itself is the next likely culprit. Replace the Bank 1 camshaft position sensor (Mopar P/N 05140332AA).
🎬 See this walkthrough on how to replace a camshaft position sensor.
8. If the code persists after the TSB and a new sensor, investigate more complex mechanical issues like timing chain stretch or consult a dealer regarding potential further engineering solutions like the prototype harness mentioned in forums.

Parts You'll Likely Need

• Camshaft Sensor Harness Repair Kit (OEM #68726700AA (Twisted pair overlay), 68144210AA (Generator cable tie straps)) — This is the specific part kit called for in TSB #08-099-25 to fix the root cause of the problem, which is electromagnetic interference.
  Trusted brands: Mopar
  OEM price range: $20-$40
  Aftermarket price range: N/A
• Camshaft Position Sensor (Bank 1) (OEM #05140332AA (supersedes 5066856AB)) — This is the component associated with the code, but it is often replaced unnecessarily. It should only be replaced if the wiring harness TSB does not resolve the issue.
  Trusted brands: Mopar, Hitachi, NGK/NTK, Delphi
  OEM price range: $50-$90
  Aftermarket price range: $30-$60

Technical Service Bulletins (TSBs) & Recalls

• 08-099-25: The primary TSB for this issue. It identifies the cause as electromagnetic interference from mis-routed generator wiring and details a fix involving a harness overlay and rerouting the generator cable. It applies to 2022-2023 Wrangler and Gladiator models with the 3.0L diesel.
• S2318000011: A general bulletin noting Malfunction Indicator Lamp illumination for DTC P0341 on 2021 models, but provides less detail than the primary TSB.

Platform-Specific Known Issues

• TSB #08-099-25 for the 3.0L Diesel engine specifically addresses P0341 caused by electromagnetic interference due to mis-routed wiring. The fix involves repairing the cam sensor harness and rerouting the generator wiring.
• Forum discussions among owners of 3.0L EcoDiesel models frequently report recurring P0341 codes that are ultimately traced back to the wiring issue. In one documented case, a dealer had to install a special 'prototype' harness under Starcase #102598114 to finally resolve the issue for a 2023 model.

Mechanic-Grade Diagnostic Values

• Camshaft Position Sensor Supply Voltage — expected: Approximately 5V with key on, engine off.. Failure: Voltage significantly lower than 5V or absent indicates a problem with the PCM or the wiring.
• Camshaft Position Sensor Ground Circuit Resistance — expected: Less than 5.0 ohms between the ground pin at the sensor connector and a known good chassis ground.. Failure: Resistance above 5.0 ohms indicates a poor ground connection in the harness or at the chassis ground point.
• Camshaft Position Sensor Signal Voltage — expected: A square wave that switches between approximately 0V and 5V when viewed on an oscilloscope while the engine is cranking or running.. Failure: A flat line, excessive noise, or a waveform that does not switch cleanly indicates a faulty sensor or interference.

Scan Tool Commands That Help

• wiTECH, Appcar DiagFCA, or other advanced scan tool: Cam Crank Relearn (or Cam/Crank Variation Relearn) — This procedure should be performed after replacing the camshaft position sensor, crankshaft position sensor, or any timing components. It allows the PCM to learn the new sensor's specific signal characteristics and mechanical tolerances. Failure to perform this may result in rough running or persistent codes even with a new part. The engine coolant must typically be above 158°F (70°C) to run the procedure.

Wiring & Ground Locations

• Bank 1 Camshaft Position Sensor — On the passenger side of the engine, at the rear of the cylinder head, on top of the valve cover.. This is the sensor that generates the P0341 code. Its harness is the one susceptible to EMI from the generator wiring.
• G906A / G906B (unconfirmed) — On the frame behind the front passenger wheel well.. These are major chassis ground points on the passenger side. A poor connection here could introduce electrical noise or resistance into sensor circuits, including the camshaft position sensor.
• Transmission Harness Chafe Point — On the passenger side, the main harness can rub against the metal clamp for an EGR tube. This is best viewed from underneath the vehicle, looking up past the upper control arm mount.. While not the specific issue from the TSB, this is another documented factory wiring flaw on the EcoDiesel JL/JT platform. Damage to this harness could cause a variety of codes, and it demonstrates the potential for wiring issues in this area.

Real Owner Repair Stories

• JLwranglerforums.com user 'greige' (2023 Jeep Wrangler EcoDiesel) — Intermittent P0341 code.
  ❌ Tried (didn't work) Initial dealer diagnosis could not find the issue.
  ✅ What actually fixed it The owner provided TSB 08-099-25 to the dealer. The dealer then recognized the TSB, verified the vehicle qualified, and performed the wiring harness reroute. The code did not return after the TSB work was completed.
• Reddit user 'Monster1200s_' (2022 Jeep Gladiator Rubicon EcoDiesel (JTRD) with 21.6k miles) — P0341 code.
  ❌ Tried (didn't work) Initial dealer visit where they were unsure of the cause, suspecting it was not the sensor itself.
  ✅ What actually fixed it The dealer and FCA identified that TSB 08-099-25 was the correct fix for the issue.

"I Checked Everything" — The Actual Cause

• This code follows a pattern of 'sensor tests good, but code returns.' A technician might test the camshaft position sensor itself with a multimeter and find it produces a valid signal on the bench or even in the vehicle at that moment. However, the root cause is not a constantly failed sensor but intermittent electromagnetic interference (EMI) from the nearby generator wiring. This interference corrupts the signal only under specific running conditions, causing the 'Range/Performance' fault. The standard diagnostic path of replacing the sensor will fail because the external interference source is not addressed until TSB 08-099-25 is performed.

OEM Part Supersession History

• 5066856AB → 05140332AA — Standard part revision/update.

Model Year Variations Within This Range

• 2021 vs. 2022-2023: The manufacturer guidance differs. For 2022-2023 models, TSB #08-099-25 provides a specific repair involving a harness overlay and rerouting. For 2021 models, the earlier STAR Case #S2318000011 was issued, which acknowledged the intermittent issue but, at the time, stated it was 'currently under investigation' and advised technicians to follow normal diagnostics before replacing parts, indicating a full solution had not yet been published.