P1296 on 1996-2000 Chrysler Sebring 2.5L V6: 'No 5 Volts to MAP Sensor' Causes and Fixes

What's Unique About the 1996-2000 Chrysler Sebring

The most critical point for this platform is that P1296 is an electrical fault, not a cooling system fault as it is on many other brands like Volkswagen or Audi. The 1996-2000 Sebring was produced as a Mitsubishi-based coupe and a Chrysler-based convertible; however, both offered the Mitsubishi-designed 2.5L 6G73 V6 engine, making this code's diagnosis consistent across both body styles. Owners often experience symptoms like engine hesitation or stalling that only appear after the vehicle has warmed up for 10-25 minutes.

Symptoms You May Notice

• Check Engine Light is on
• Engine hesitation or bucking, especially under light throttle or when going uphill
• Engine stutters or surges
• Engine may stall, sometimes only after it has warmed up (e.g., after 10-25 minutes of driving)
• Difficult to restart immediately after stalling, may require a cool-down period of 1-2 minutes
• Rough or unstable idle
• Poor fuel economy

Most Likely Causes

1. Faulty Manifold Absolute Pressure (MAP) Sensor 🔴 High Probability The MAP sensor is a critical electronic component that operates in a high-heat engine bay environment and can fail internally over time. It is the most common point of failure when code P1296 is present.
   How to confirm: After confirming with a multimeter that the 5-volt supply and ground are good at the connector, the sensor itself is the most likely remaining failure point. Replacing the sensor is a common and effective fix. A mechanic on 2CarPros advised that given the intermittent nature and the specific code, replacing the MAP sensor is the logical first step after a visual wiring check.
   Typical fix: Replace the MAP sensor. It is typically located on the intake manifold and is easily accessible.
   Est. part cost: $30-$70
2. Damaged Wiring or Connector 🟡 Medium Probability Engine harness wiring can become brittle and fail from age and heat cycles. The MAP sensor connector or the PCM connector can also corrode or have pins back out. Oil from common valve cover leaks can also contaminate and degrade wiring and connectors.
   How to confirm: Visually inspect the wiring harness between the PCM and MAP sensor for any signs of damage, melting, or chafing. Unplug the connectors at both the sensor and the PCM to check for corrosion, moisture, or bent/backed-out pins. Use a multimeter on the harness-side connector to check for 5V power and ground. The pins are typically: Pin 1 (Ground), Pin 2 (5V Reference from PCM), and Pin 3 (Signal Output to PCM). A lack of 5V on Pin 2 points to a wiring or PCM issue.
   Typical fix: Repair the damaged section of wire or replace the faulty connector pigtail. Clean corroded terminals and apply dielectric grease.
   Est. part cost: $10-$30
3. Faulty Powertrain Control Module (PCM) ⚪ Low Probability
   How to confirm: This should be the last resort after confirming the MAP sensor and all wiring are in perfect condition. If there is no 5-volt output directly at the PCM pin for the MAP sensor circuit (and other 5V reference circuits are also dead), the PCM's internal voltage regulator has likely failed.
   Typical fix: Replace the Powertrain Control Module (PCM). This often requires programming to the vehicle's VIN. Rebuilt units are available.
   Est. part cost: $200-$500

Diagnosis Steps

1. Retrieve all stored DTCs with an OBD-II scanner to confirm P1296 is present and note any other codes.
2. Locate the MAP sensor on the top of the intake manifold, near the throttle body.
3. Turn the ignition to the 'ON' position, but do not start the engine.
4. Disconnect the electrical connector from the MAP sensor.
5. Using a multimeter set to DC Volts, probe the terminals on the harness-side connector. A wiring diagram is recommended, but the pinout is commonly: Pin 1 = Ground, Pin 2 = 5-Volt Reference, Pin 3 = Signal.
6. Probe Pin 2 (or the corresponding wire). It should have approximately 5 volts. This is the reference voltage from the PCM.
7. Probe Pin 1 (or the corresponding wire). It should have close to 0 volts (good ground).
8. If the 5-volt reference is missing on Pin 2, the problem is in the wiring harness or the PCM. If 5 volts and ground are present, the MAP sensor itself is the most likely culprit.
9. If no voltage is found, inspect the wiring harness for visible damage, paying close attention to areas where oil from the valve covers might have leaked onto the loom.
10. If the wiring looks good, the final step is to check for 5-volt output at the corresponding pin on the PCM connector to rule out a failed PCM.

Parts You'll Likely Need

• Manifold Absolute Pressure (MAP) Sensor (OEM #4606133) — This sensor is the most frequent failure point for code P1296, as it directly relates to the circuit mentioned in the code's definition.
  Trusted brands: Mopar, NGK/NTK, Delphi, Standard Motor Products (SMP), Walker
  OEM price range: $60-$100
  Aftermarket price range: $30-$70

Related Codes That Often Appear With This One

• P1391 — A user on an Edmunds forum reported having P1296 alongside P1391 (Intermittent loss of Cam/Crank Position Sensor). This can occur if a wiring issue or PCM fault affects multiple sensor circuits simultaneously.

Technical Service Bulletins (TSBs) & Recalls

• While no TSBs directly address the P1296 code on this vehicle, a related safety issue is NHTSA Recall 02V191000, which concerns a fraying throttle cable that can cause a loss of throttle control.

Platform-Specific Known Issues

• Oil Contamination from Leaky Valve Cover Gaskets: The 2.5L V6 is well-known for leaky valve cover gaskets. Oil can drip down the back of the engine and onto the wiring and connector for the crankshaft position sensor, causing it to fail and produce stalling symptoms similar to a MAP sensor issue. One owner on an Edmunds forum spent $3400 on various parts before a mechanic found that leaky valve cover gaskets had allowed oil to ruin the crank sensor. This highlights the importance of checking for oil leaks when diagnosing any electrical or sensor-related problem on this engine.

Mechanic-Grade Diagnostic Values

• MAP Sensor 5V Reference Supply — expected: 4.8 to 5.1 Volts DC with key on, engine off.. Failure: Voltage below 4.8V or 0V indicates an open/short in the supply wire or a faulty PCM.
• MAP Sensor Signal Voltage at Idle — expected: 1.1 to 1.8 Volts DC (high vacuum).. Failure: Voltage outside this range at idle suggests a faulty sensor, vacuum leak, or engine mechanical issue.
• MAP Sensor Signal Voltage at Wide Open Throttle (WOT) — expected: 3.9 to 4.8 Volts DC (low vacuum).. Failure: Voltage that doesn't rise close to 5V with the throttle snapped open points to a faulty sensor.
• MAP Sensor Ground Circuit Integrity — expected: 10 to 12 Volts when back-probing the ground wire with the red lead and connecting the black lead to the battery positive terminal.. Failure: Low or no voltage indicates a poor ground connection for the sensor, which can cause erratic readings.

Scan Tool Commands That Help

• DRB III: Module Display (in FCM/IPM or Body Interior menu) — To read the hardware part number of control modules like the Front Control Module (FCM) or Powertrain Control Module (PCM), which is necessary before ordering a replacement or attempting a flash update.
• DRB III: Module Scan — After a repair or module replacement, this function scans all vehicle modules for any set Diagnostic Trouble Codes (DTCs). It's important because replacing one module can sometimes set codes in others.

Wiring & Ground Locations

• MAP Sensor Location — On the intake manifold plenum, near the timing belt cover.. This is the primary component for the P1296 code. Its location makes it susceptible to engine heat, which can contribute to failure.
• G101 — At the left strut tower in the engine bay.. This is a major engine bay ground point. A loose or corroded connection here can cause a variety of sensor and module communication issues, including problems with the 5-volt reference circuits.
• G102 — At the rear of the transaxle.. This ground is critical for the powertrain. A poor connection can lead to intermittent electrical faults that are hard to trace, potentially mimicking sensor failures.
• Splice S115 / S116 — In the engine harness, near the breakout for the MAP/IAT sensor (2.4L) or near the EGR breakout (2.5L).. These splices are points where multiple wires join. A corroded or failed splice can interrupt the 5-volt reference or ground signal to the MAP sensor, directly causing a P1296 code.

Real Owner Repair Stories

• 2CarPros Forum User (1996 Chrysler Sebring Convertible JXi 2.5L V6) — Very intermittent engine stalling/shutting off. Sometimes required a little cranking to restart. The Check Engine Light came on once with code P1296.
  ❌ Tried (didn't work) The owner was trying to diagnose the intermittent electrical or fuel problem without simply replacing parts.
  ✅ What actually fixed it A mechanic on the forum advised that based on the P1296 code ('missing 5 volt supply'), the most likely causes were a break in the wire, a bad connector, or an internal failure in the MAP sensor. Due to the intermittent nature of the fault, replacing the MAP sensor was the recommended first step after a visual inspection of the connector.
• Edmunds Car Forums User (1997 Chrysler Sebring) — Engine hesitation and stalling, eventually accompanied by code P1296.
  ❌ Tried (didn't work) Replaced fuel pump., Replaced distributor (which includes the camshaft sensor)., Replaced spark plugs and wires.
  ✅ What actually fixed it The issue was resolved after replacing the MAP Sensor and its connector. The user noted that they had not received the P1296 code again after this specific repair.

OEM Part Supersession History

• 5269983 → 4606133 — Part number consolidation and potential design update over the vehicle's production life.
  Heads up: While 4606133 is the correct service part, some aftermarket parts may be listed under the older 5269983 number. Always verify fitment for the specific 1996-2000 2.5L V6 model.

Model Year Variations Within This Range

• 1996-2000: The first-generation Sebring was offered as a coupe (FJ body) and a convertible (JX body). The coupe was based on the Mitsubishi Eclipse platform, while the convertible was based on the Chrysler Cirrus sedan platform. However, both body styles used the same Mitsubishi-designed 2.5L 6G73 V6 engine, meaning the diagnosis for P1296 is identical between them.

Diagnostic Flowchart

Other Known Issues on This Vehicle

Issues unrelated to this code that are worth knowing about as an owner of this generation:

• A604/41TE Automatic Transmission Failure 🔴 High — Very common, especially over 100,000 miles. Issues include harsh shifting, slipping, and entering 'limp-home' mode. (Ref: Using incorrect fluid (non-ATF+4) is a primary cause of failure.)
• Distributor and Camshaft Position Sensor Failure 🔴 High — The camshaft position sensor is integrated into the distributor, which is a frequent failure point. Symptoms include stalling when hot, no-start, and misfires. Owners report aftermarket distributors can be unreliable.
• Valve Cover Gasket Oil Leaks 🟠 Medium — Extremely common. The rear valve cover is difficult to access. Leaking oil can foul the spark plug wells and drip onto other critical components like the crankshaft position sensor, causing stalling and no-start conditions.
• Fraying Throttle Control Cable 🔴 High — Sufficiently widespread to trigger an official recall (NHTSA Campaign ID: 02V191000). (Ref: Recall 02V191000: The throttle control cable can fray, causing the throttle to bind or stick, which could result in a loss of throttle control.)
• Clogged EGR Valve and Passages 🟠 Medium — The EGR valve is prone to clogging with carbon, causing rough idle, hesitation, and engine knocking, particularly when the engine is warm. Often triggers code P0401.

Used vs. New Parts: Buying Guide for This Vehicle

When a used part is the smart pick: A used OEM MAP sensor from a junkyard can be a cost-effective option, as they are generally reliable and failures are often age-related rather than a design flaw. Given the low cost of new aftermarket parts, a used part is most sensible if you are already at a salvage yard for other components.

Donor-vehicle mileage cap: roughly under 80000 miles for the part to have meaningful remaining life.

What to inspect on the donor part:

• Check the donor vehicle's mileage; lower is always better.
• Inspect the plastic housing of the sensor for cracks or signs of extreme heat stress.
• Examine the electrical connector pins on the sensor to ensure they are straight and free of corrosion.
• Avoid sensors from engines that show signs of major oil leaks or overheating (e.g., burnt plastic, heavy grime).

OEM-only on this vehicle (don't cheap out):

• Crankshaft Position Sensor
• Camshaft Position Sensor (Distributor)

Aftermarket brands forum-validated for this vehicle:

• NGK/NTK
• Delphi
• Standard Motor Products (SMP)
• Mopar (OEM)

Brands owners have reported issues with on this vehicle:

• Unbranded, 'white-box' parts from online marketplaces should be avoided, as their quality and calibration are often questionable.

Real Owner Stories

Aggregated from forums and TSBs cited above. Mileages and costs reflect what owners reported in those sources.

Related OBD-II Codes

• P0335 — Crankshaft Position Sensor Circuit Malfunction. The context highlights that a failing crank sensor, often damaged by oil from leaky valve cover gaskets, can cause stalling symptoms similar to a P1296 fault and is a common point of misdiagnosis.
• P0340 — Camshaft Position Sensor Circuit Malfunction. The camshaft position sensor is integrated into the distributor, which is noted in the context as a frequent failure point causing stalling when hot and no-start conditions.
• P0123 — Throttle Position Sensor (TPS) Circuit High Input. A forum citation mentions an owner incorrectly replaced the TPS before finding the MAP sensor was the true cause of P1296, indicating symptom overlap.
• P0300 — Random/Multiple Cylinder Misfire Detected. A failing MAP sensor provides incorrect data to the PCM, which can lead to an improper air/fuel mixture, causing hesitation, stuttering, and misfires that could trigger this code alongside P1296.
• P0700 — Transmission Control System (TCS) Malfunction. This code indicates a general transmission fault. The context mentions the A604/41TE transmission is prone to failure and entering 'limp-home' mode, which could be confused with engine performance issues.

Frequently Asked Questions